{"id":6066,"date":"2019-10-07T18:16:43","date_gmt":"2019-10-07T18:16:43","guid":{"rendered":"https:\/\/hangarmma.com.br\/blog\/?p=6066"},"modified":"2025-08-23T22:53:18","modified_gmt":"2025-08-24T01:53:18","slug":"porta-logica","status":"publish","type":"post","link":"https:\/\/hangarmma.com.br\/blog\/porta-logica\/","title":{"rendered":"O que s\u00e3o portas l\u00f3gicas"},"content":{"rendered":"<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"842\" height=\"512\" src=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/10\/01.png\" alt=\"\" class=\"wp-image-6131\" srcset=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/10\/01.png 842w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/10\/01-300x182.png 300w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/10\/01-768x467.png 768w\" sizes=\"auto, (max-width: 842px) 100vw, 842px\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">S&#xE3;o dispositivos que operam e trabalham com um ou mais sinais l&#xF3;gicos de entrada para ter no final uma e somente uma sa&#xED;da, de acordo com a fun&#xE7;&#xE3;o criada no <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_8475a091b5ac4429a52bc047365d267e\" data-link=\"https:\/\/hangarmma.com.br\/blog\/circuito\/\" href=\"https:\/\/hangarmma.com.br\/blog\/circuito\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">circuito<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p><p>Na atualidade, a sua implementa&#xE7;&#xE3;o &#xE9; quase sempre em circuitos eletr&#xF4;nicos integrados, mas podem ser componentes discretos, circuitos el&#xE9;ctricos com <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_7fe2a76f87e56c50289bc11712c33222\" data-link=\"https:\/\/hangarmma.com.br\/blog\/reles-2\/\" href=\"https:\/\/hangarmma.com.br\/blog\/reles-2\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">rel&#xE9;s<\/a>, dispositivos &#xF3;pticos, circuitos hidr&#xE1;ulicos ou mesmo mecanismos.<\/p><br>\n\n\n\n<p class=\"wp-block-paragraph\">Considerando <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_118b35af007736ed239190bd9cdb5978\" data-link=\"https:\/\/hangarmma.com.br\/blog\/circuitos-eletricos\/\" href=\"https:\/\/hangarmma.com.br\/blog\/circuitos-eletricos\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">circuitos el&#xE9;tricos<\/a> ou eletr&#xF4;nicos, deve-se notar que os valores l&#xF3;gicos 0 e 1 s&#xE3;o representados por tens&#xF5;es ou correntes. Na an&#xE1;lise l&#xF3;gica, esse dado n&#xE3;o &#xE9; levado em conta e os valores de entradas e sa&#xED;das s&#xE3;o sempre referidos a 0 ou a 1.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Porta OR (OU)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nesta <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0edf0a5114cf353b504a6e6eccfceb5d\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>porta<\/a>, a sa&iacute;da S &eacute; igual &agrave; opera&ccedil;&atilde;o booleana OR entre os valores das entradas. Na figura abaixo, est&aacute; representado o s&iacute;mbolo usual e, a tabela de verdade da fun&ccedil;&atilde;o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A fun&#xE7;&#xE3;o booleana (ou l&#xF3;gica) &#xE9; S = A + B.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"708\" height=\"222\" src=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-18.png\" alt=\"\" class=\"wp-image-880\" srcset=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-18.png 708w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-18-300x94.png 300w\" sizes=\"auto, (max-width: 708px) 100vw, 708px\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"782\" height=\"504\" src=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-21.png\" alt=\"\" class=\"wp-image-884\" srcset=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-21.png 782w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-21-300x193.png 300w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-21-768x495.png 768w\" sizes=\"auto, (max-width: 782px) 100vw, 782px\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A figura acima apresenta um <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_8475a091b5ac4429a52bc047365d267e\" data-link=\"https:\/\/hangarmma.com.br\/blog\/circuito\/\" href=\"https:\/\/hangarmma.com.br\/blog\/circuito\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">circuito<\/a> el&#xE9;ctrico simples com dois interruptores e uma l&#xE2;mpada. Neste caso, o interruptor desligado &#xE9; n&#xED;vel l&#xF3;gico 0 e interruptor ligado &#xE9; o n&#xED;vel l&#xF3;gico 1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A l&#xE2;mpada liga quando pelo menos um dos interruptores est&#xE1; ligado. Portanto, o <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_8475a091b5ac4429a52bc047365d267e\" data-link=\"https:\/\/hangarmma.com.br\/blog\/circuito\/\" href=\"https:\/\/hangarmma.com.br\/blog\/circuito\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">circuito<\/a> opera conforme a tabela de verdade ao lado.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Porta AND (E)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A sa&#xED;da S &#xE9; igual &#xE0; opera&#xE7;&#xE3;o booleana E entre os valores das entradas. S&#xED;mbolo usual conforme a figura e a tabela de verdade em baixo. A figura mostra um <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_8475a091b5ac4429a52bc047365d267e\" data-link=\"https:\/\/hangarmma.com.br\/blog\/circuito\/\" href=\"https:\/\/hangarmma.com.br\/blog\/circuito\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">circuito<\/a> simples com interruptores.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Agora, os contatos est&#xE3;o em s&#xE9;rie e a sa&#xED;da s&#xF3; ter&#xE1; n&#xED;vel 1 quando todas as<br>entradas forem tamb&#xE9;m 1. A fun&#xE7;&#xE3;o S = A . B<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"710\" height=\"228\" src=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-22.png\" alt=\"\" class=\"wp-image-885\" srcset=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-22.png 710w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-22-300x96.png 300w\" sizes=\"auto, (max-width: 710px) 100vw, 710px\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"521\" src=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/Sem-t&#xED;tulo-1024x521.png\" alt=\"\" class=\"wp-image-887\" srcset=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/Sem-t&#xED;tulo-1024x521.png 1024w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/Sem-t&#xED;tulo-300x153.png 300w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/Sem-t&#xED;tulo-768x391.png 768w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/Sem-t&#xED;tulo.png 1028w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Porta NOT<\/strong> (N&#xC3;O &#x2013; nega&#xE7;&#xE3;o)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Na <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_52e03272daed85098b960ecd68aac2c5\" data-link=\"https:\/\/hangarmma.com.br\/blog\/porta-not\/\" href=\"https:\/\/hangarmma.com.br\/blog\/porta-not\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">porta NOT<\/a>, a sa&#xED;da S est&#xE1; invertida relativamente &#xE0; entrada A.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Na Figura abaixo podemos ver o s&#xED;mbolo usual, a tabela de verdade e <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_8475a091b5ac4429a52bc047365d267e\" data-link=\"https:\/\/hangarmma.com.br\/blog\/circuito\/\" href=\"https:\/\/hangarmma.com.br\/blog\/circuito\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">circuito<\/a> el&#xE9;ctrico simples para a fun&#xE7;&#xE3;o.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"246\" src=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-24-1024x246.png\" alt=\"\" class=\"wp-image-888\" srcset=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-24-1024x246.png 1024w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-24-300x72.png 300w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-24-768x185.png 768w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-24.png 1039w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A fun&#xE7;&#xE3;o l&#xF3;gica &#xE9; S = A . A <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_52e03272daed85098b960ecd68aac2c5\" data-link=\"https:\/\/hangarmma.com.br\/blog\/porta-not\/\" href=\"https:\/\/hangarmma.com.br\/blog\/porta-not\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">porta NOT<\/a> &#xE9; tamb&#xE9;m denominada <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_b4d78967f22f4b6eaf03412fd9b1f45d\" data-link=\"https:\/\/hangarmma.com.br\/blog\/inversor\/\" href=\"https:\/\/hangarmma.com.br\/blog\/inversor\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">inversor<\/a>. Para simplificar os diagramas, o s&iacute;mbolo &eacute; apenas um pequeno c&iacute;rculo se estiver junto de uma entrada ou sa&iacute;da de outra <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0edf0a5114cf353b504a6e6eccfceb5d\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>porta<\/a> l&oacute;gica.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong> Porta N&#xE3;o inversora <\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Na <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0edf0a5114cf353b504a6e6eccfceb5d\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>porta<\/a> N&atilde;o inversora, a sa&iacute;da S &eacute; igual &agrave; entrada A. Na Figura abaixo podemos ver o s&iacute;mbolo usual, a tabela de verdade e <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_8475a091b5ac4429a52bc047365d267e\" data-link=\"https:\/\/hangarmma.com.br\/blog\/circuito\/\" href=\"https:\/\/hangarmma.com.br\/blog\/circuito\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">circuito<\/a> el&#xE9;ctrico simples para a fun&#xE7;&#xE3;o.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"242\" src=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-25-1024x242.png\" alt=\"\" class=\"wp-image-889\" srcset=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-25-1024x242.png 1024w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-25-300x71.png 300w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-25-768x182.png 768w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-25.png 1035w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A fun&ccedil;&atilde;o l&oacute;gica &eacute; S =A. Esta <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0edf0a5114cf353b504a6e6eccfceb5d\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>porta<\/a> &eacute; tamb&eacute;m denominada como buffer n&atilde;o <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_b4d78967f22f4b6eaf03412fd9b1f45d\" data-link=\"https:\/\/hangarmma.com.br\/blog\/inversor\/\" href=\"https:\/\/hangarmma.com.br\/blog\/inversor\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">inversor<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong> Portas com mais de duas entradas<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Em <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_617bafa94b322b082f5e41b31e5d2200\" data-link=\"https:\/\/hangarmma.com.br\/blog\/ratio\/\" href=\"https:\/\/hangarmma.com.br\/blog\/ratio\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">raz&#xE3;o<\/a> da opera&ccedil;&atilde;o que executa, a <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0edf0a5114cf353b504a6e6eccfceb5d\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>porta<\/a> N&Atilde;O admite apenas uma entrada. As portas OR e AND (e outras delas derivadas) podem ter qualquer n&uacute;mero n &ge; 2 de entradas.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"518\" src=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-26-1024x518.png\" alt=\"\" class=\"wp-image-890\" srcset=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-26-1024x518.png 1024w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-26-300x152.png 300w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-26-768x388.png 768w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-26.png 1110w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">No quadro anterior, pode-se ver o s&#xED;mbolo e a tabela de verdade para a <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_f56437c2f0fb8cecbe0bf4ede723d1f5\" data-link=\"https:\/\/hangarmma.com.br\/blog\/porta-or\/\" href=\"https:\/\/hangarmma.com.br\/blog\/porta-or\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">porta OR<\/a> de 3 entradas, S = A + B + C.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Porta NOR<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">&#xC9; uma <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_f56437c2f0fb8cecbe0bf4ede723d1f5\" data-link=\"https:\/\/hangarmma.com.br\/blog\/porta-or\/\" href=\"https:\/\/hangarmma.com.br\/blog\/porta-or\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">porta OR<\/a> com um <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_b4d78967f22f4b6eaf03412fd9b1f45d\" data-link=\"https:\/\/hangarmma.com.br\/blog\/inversor\/\" href=\"https:\/\/hangarmma.com.br\/blog\/inversor\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">inversor<\/a> (NOT) na sa&#xED;da, que, nos diagramas, pode ser representado por um pequeno c&#xED;rculo conforme j&#xE1; comentado.<br>Express&#xE3;o l&#xF3;gica segundo &#xE1;lgebra de Boole: S = A + B.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Devido &#xE0; a&#xE7;&#xE3;o do <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_b4d78967f22f4b6eaf03412fd9b1f45d\" data-link=\"https:\/\/hangarmma.com.br\/blog\/inversor\/\" href=\"https:\/\/hangarmma.com.br\/blog\/inversor\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">inversor<\/a>, os resultados s&#xE3;o complementares aos da <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_f56437c2f0fb8cecbe0bf4ede723d1f5\" data-link=\"https:\/\/hangarmma.com.br\/blog\/porta-or\/\" href=\"https:\/\/hangarmma.com.br\/blog\/porta-or\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">porta OR<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"323\" src=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-27-1024x323.png\" alt=\"\" class=\"wp-image-891\" srcset=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-27-1024x323.png 1024w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-27-300x95.png 300w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-27-768x242.png 768w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-27.png 1123w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Porta NAND<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">De forma similar &agrave; anterior, apresenta resultados complementares aos da <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0edf0a5114cf353b504a6e6eccfceb5d\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>porta<\/a> E devido ao <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_b4d78967f22f4b6eaf03412fd9b1f45d\" data-link=\"https:\/\/hangarmma.com.br\/blog\/inversor\/\" href=\"https:\/\/hangarmma.com.br\/blog\/inversor\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">inversor<\/a> na sa&#xED;da. S&#xED;mbolo usual e tabela de verdade para duas entradas nas Figuras acima.<br>Fun&#xE7;&#xE3;o l&#xF3;gica: S = B . A<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Porta XOR e XNOR<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Conforme visto em, a opera&ccedil;&atilde;o booleana OR n&atilde;o oferece plena equival&ecirc;ncia com a soma aritm&eacute;tica comum. A fun&ccedil;&atilde;o XOR (OR Exclusivo) permite essa correspond&ecirc;ncia. A <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0edf0a5114cf353b504a6e6eccfceb5d\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>porta<\/a> XOR &eacute; a fun&ccedil;&atilde;o diferen&ccedil;a, a sa&iacute;da &eacute; 1 sempre que A&ne;B.<\/p>\n\n\n\n<figure class=\"wp-block-image is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"431\" height=\"53\" src=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-28.png\" alt=\"\" class=\"wp-image-892\" style=\"width:254px;height:31px\" srcset=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-28.png 431w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-28-300x37.png 300w\" sizes=\"auto, (max-width: 431px) 100vw, 431px\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"325\" src=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-29-1024x325.png\" alt=\"\" class=\"wp-image-893\" srcset=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-29-1024x325.png 1024w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-29-300x95.png 300w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-29-768x243.png 768w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-29.png 1123w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0edf0a5114cf353b504a6e6eccfceb5d\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>porta<\/a> XNOR &eacute; a <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0edf0a5114cf353b504a6e6eccfceb5d\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>porta<\/a> XOR com um <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_b4d78967f22f4b6eaf03412fd9b1f45d\" data-link=\"https:\/\/hangarmma.com.br\/blog\/inversor\/\" href=\"https:\/\/hangarmma.com.br\/blog\/inversor\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">inversor<\/a> na sa&iacute;da, resultando em valores complementares aos da anterior. A <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0edf0a5114cf353b504a6e6eccfceb5d\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>porta<\/a> XNOR &eacute; a fun&ccedil;&atilde;o igualdade, a sa&iacute;da &eacute; 1 sempre que A=B.<\/p>\n\n\n\n<figure class=\"wp-block-image is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"556\" height=\"51\" src=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-30.png\" alt=\"\" class=\"wp-image-894\" style=\"width:307px;height:28px\" srcset=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-30.png 556w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-30-300x28.png 300w\" sizes=\"auto, (max-width: 556px) 100vw, 556px\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><strong> Circuito integrado T&#xED;picos<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Aqui apresentam-se alguns CI t&#xED;picos CMOS (40XX) e TTL (74XX)<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"878\" height=\"334\" src=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-36.png\" alt=\"\" class=\"wp-image-904\" srcset=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-36.png 878w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-36-300x114.png 300w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-36-768x292.png 768w\" sizes=\"auto, (max-width: 878px) 100vw, 878px\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"690\" height=\"311\" src=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-31.png\" alt=\"\" class=\"wp-image-895\" srcset=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-31.png 690w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-31-300x135.png 300w\" sizes=\"auto, (max-width: 690px) 100vw, 690px\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>OR<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"370\" height=\"323\" src=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-32.png\" alt=\"\" class=\"wp-image-897\" srcset=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-32.png 370w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-32-300x262.png 300w\" sizes=\"auto, (max-width: 370px) 100vw, 370px\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>AND<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"673\" height=\"318\" src=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-33.png\" alt=\"\" class=\"wp-image-898\" srcset=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-33.png 673w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-33-300x142.png 300w\" sizes=\"auto, (max-width: 673px) 100vw, 673px\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>NOT<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"608\" height=\"313\" src=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-34.png\" alt=\"\" class=\"wp-image-899\" srcset=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-34.png 608w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-34-300x154.png 300w\" sizes=\"auto, (max-width: 608px) 100vw, 608px\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>BUFFER<br>NOT e NAND<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"371\" height=\"588\" src=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-35.png\" alt=\"\" class=\"wp-image-900\" srcset=\"https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-35.png 371w, https:\/\/hangarmma.com.br\/blog\/wp-content\/uploads\/2019\/05\/image-35-189x300.png 189w\" sizes=\"auto, (max-width: 371px) 100vw, 371px\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>GLOSS&#xC1;RIO<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Barramento el&#xE9;trico<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Realiza a fun&#xE7;&#xE3;o de <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_836e2c427cf3ef8bcecf9248b98be024\" data-link=\"https:\/\/hangarmma.com.br\/blog\/condutor\/\" href=\"https:\/\/hangarmma.com.br\/blog\/condutor\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">condutor<\/a> dentro de um sistema el&eacute;trico. Os barramentos el&eacute;tricos de cobre s&atilde;o resistentes ao <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_fba6d7bf5c0847a6c0bdeb5ecd4f09ba\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/calor\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/calor\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>calor<\/a> e a corros&atilde;o.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong> Protocolo<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">De maneira simples, um protocolo pode ser definido como &#x201C;as regras que governam&#x201D; a sintaxe, sem&#xE2;ntica e sincroniza&#xE7;&#xE3;o da <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_09e2f1cc48a95ea1e8945a1f73bfdcc7\" data-link=\"https:\/\/hangarmma.com.br\/blog\/comunicacao\/\" href=\"https:\/\/hangarmma.com.br\/blog\/comunicacao\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">comunica&#xE7;&#xE3;o<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Bit<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Simplifica&ccedil;&atilde;o para d&iacute;gito bin&aacute;rio, &ldquo;Binary digit&rdquo; (em ingl&ecirc;s) &eacute; a menor unidade de informa&ccedil;&atilde;o que pode ser armazenada ou transmitida, usada na Computa&ccedil;&atilde;o e na Teoria da Informa&ccedil;&atilde;o. Um <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_50fa491108a6728b23a4254e1c6a6320\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/bit\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/bit\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>bit<\/a> pode assumir somente 2 valores: 0 ou 1, corte ou passagem de <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_b8619216dd0506d51ad0093ac9f798ab\" data-link=\"https:\/\/hangarmma.com.br\/blog\/energia-2\/\" href=\"https:\/\/hangarmma.com.br\/blog\/energia-2\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">energia<\/a> respectivamente.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong> LRU (Line Replaceable Unit)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">&#xC9; a designa&#xE7;&#xE3;o atribu&#xED;da a um componente, normalmente exterior, facilmente substitu&#xED;vel a n&#xED;vel de linha.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong> Commercial Standard Digital Bus &#x2013; CSDB<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Barramento Digital Padr&#xE3;o Comercial &#xE9; um barramento ass&#xED;ncrono unidirecional, anteriormente conhecido como o Barramento Digital Padr&#xE3;o Collins. A <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_b538845fda1d032e858fa6b8d5d0879c\" data-link=\"https:\/\/hangarmma.com.br\/blog\/velocidade\/\" href=\"https:\/\/hangarmma.com.br\/blog\/velocidade\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">velocidade<\/a> m&#xE1;xima &#xE9; de 50 kbit \/s.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong> Express&#xE3;o de l&#xF3;gica booleana<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><br><\/strong> &#xC9; uma estrutura l&#xF3;gica que pode ser verdadeira ou falsa. As express&#xF5;es podem ser ligadas atrav&#xE9;s de operadores (como AND, OR e NOR) para possibilitar a cria&#xE7;&#xE3;o de express&#xF5;es complexas.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Circuito integrado <\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Um <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_8475a091b5ac4429a52bc047365d267e\" data-link=\"https:\/\/hangarmma.com.br\/blog\/circuito\/\" href=\"https:\/\/hangarmma.com.br\/blog\/circuito\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">circuito<\/a> integrado, abreviadamente CI, &#xE9; um <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_8475a091b5ac4429a52bc047365d267e\" data-link=\"https:\/\/hangarmma.com.br\/blog\/circuito\/\" href=\"https:\/\/hangarmma.com.br\/blog\/circuito\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">circuito<\/a> eletr&#xF4;nico miniaturizado (<a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_96c934d0ba471a6dc3710c9be30f6d40\" data-link=\"https:\/\/hangarmma.com.br\/blog\/composto\/\" href=\"https:\/\/hangarmma.com.br\/blog\/composto\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">composto<\/a> principalmente por dispositivos <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_40d6bdd1f492047a85e75c09097eff1b\" data-link=\"https:\/\/hangarmma.com.br\/blog\/semicondutores\/\" href=\"https:\/\/hangarmma.com.br\/blog\/semicondutores\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">semicondutores<\/a>) sobre um <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_7599cfa50e261c67f8656215ba54998d\" data-link=\"https:\/\/hangarmma.com.br\/blog\/substrato\/\" href=\"https:\/\/hangarmma.com.br\/blog\/substrato\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">substrato<\/a> fino de material semicondutor.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Gloss&#xE1;rio &#x2014; Portas L&#xF3;gicas (Eletricidade B&#xE1;sica)<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Navegue pelos termos (ordem alfab&#xE9;tica):<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"#algebra-booleana\">&#xC1;lgebra Booleana<\/a><\/li>\n\n\n\n<li><a href=\"#and\">AND (Porta E)<\/a><\/li>\n\n\n\n<li><a href=\"#bit\">Bit<\/a><\/li>\n\n\n\n<li><a href=\"#buffer\">Buffer (Porta n&#xE3;o inversora)<\/a><\/li>\n\n\n\n<li><a href=\"#cmos\">CMOS (fam&#xED;lia 40xx)<\/a><\/li>\n\n\n\n<li><a href=\"#circuito-eletrico\">Circuito el&#xE9;trico<\/a><\/li>\n\n\n\n<li><a href=\"#circuito-integrado\">Circuito integrado (CI)<\/a><\/li>\n\n\n\n<li><a href=\"#csdb\">CSDB (Commercial Standard Digital Bus)<\/a><\/li>\n\n\n\n<li><a href=\"#entrada\">Entrada (sinal de entrada)<\/a><\/li>\n\n\n\n<li><a href=\"#expressao-booleana\">Express&#xE3;o booleana<\/a><\/li>\n\n\n\n<li><a href=\"#inversor-not\">Inversor (Porta NOT)<\/a><\/li>\n\n\n\n<li><a href=\"#lru\">LRU (Line Replaceable Unit)<\/a><\/li>\n\n\n\n<li><a href=\"#nivel-logico\">N&#xED;vel l&#xF3;gico (0 e 1)<\/a><\/li>\n\n\n\n<li><a href=\"#nand\">NAND<\/a><\/li>\n\n\n\n<li><a href=\"#nor\">NOR<\/a><\/li>\n\n\n\n<li><a href=\"#or\">OR (Porta OU)<\/a><\/li>\n\n\n\n<li><a href=\"#portas-multiplas-entradas\">Portas com m&#xFA;ltiplas entradas<\/a><\/li>\n\n\n\n<li><a href=\"#protocolo\">Protocolo (comunica&#xE7;&#xE3;o)<\/a><\/li>\n\n\n\n<li><a href=\"#rele\">Rel&#xE9;<\/a><\/li>\n\n\n\n<li><a href=\"#saida\">Sa&#xED;da (sinal de sa&#xED;da)<\/a><\/li>\n\n\n\n<li><a href=\"#simbolo\">S&#xED;mbolo (portas l&#xF3;gicas)<\/a><\/li>\n\n\n\n<li><a href=\"#soma-logica\">Soma l&#xF3;gica ( + )<\/a><\/li>\n\n\n\n<li><a href=\"#tabela-verdade\">Tabela-verdade<\/a><\/li>\n\n\n\n<li><a href=\"#ttl\">TTL (fam&#xED;lia 74xx)<\/a><\/li>\n\n\n\n<li><a href=\"#xor\">XOR (OU exclusivo)<\/a><\/li>\n\n\n\n<li><a href=\"#xnor\">XNOR (equival&#xEA;ncia)<\/a><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"algebra-booleana\"><strong>&#xC1;lgebra Booleana<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Conjunto de regras matem&#xE1;ticas que trabalha apenas com dois valores (0 e 1). Permite representar fun&#xE7;&#xF5;es l&#xF3;gicas com operadores como <em>+<\/em> (OR), <em>&#xB7;<\/em> (AND) e nega&#xE7;&#xE3;o (NOT).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"and\"><strong>AND (Porta E)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0edf0a5114cf353b504a6e6eccfceb5d\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>Porta<\/a> cuja sa&iacute;da &eacute; 1 somente quando <em>todas<\/em> as entradas s&#xE3;o 1. Express&#xE3;o t&#xED;pica: <em>S = A &#xB7; B<\/em>. Em s&#xE9;rie com interruptores, a l&#xE2;mpada s&#xF3; acende se todos estiverem ligados.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"bit\"><strong>Bit<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Menor unidade de informa&#xE7;&#xE3;o (0 ou 1). Em circuitos, representa corte (0) ou passagem (1) de <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_b8619216dd0506d51ad0093ac9f798ab\" data-link=\"https:\/\/hangarmma.com.br\/blog\/energia-2\/\" href=\"https:\/\/hangarmma.com.br\/blog\/energia-2\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">energia<\/a>\/n&#xED;vel l&#xF3;gico.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"buffer\"><strong>Buffer (Porta n&#xE3;o inversora)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0edf0a5114cf353b504a6e6eccfceb5d\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>Porta<\/a> cuja sa&iacute;da repete a entrada (S = A). Usada para &ldquo;isolar&rdquo; est&aacute;gios, melhorar margem de corrente ou ajustar imped&acirc;ncias, sem inverter o n&iacute;vel l&oacute;gico.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"cmos\"><strong>CMOS (fam&#xED;lia 40xx)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tecnologia de CIs l&#xF3;gicos muito usada em baixa <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_555b5d38d6960552ca65f98e44b9c9b6\" data-link=\"https:\/\/hangarmma.com.br\/blog\/potencia\/\" href=\"https:\/\/hangarmma.com.br\/blog\/potencia\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">pot&#xEA;ncia<\/a>. S&#xE9;rie &#x201C;40xx&#x201D; re&#xFA;ne portas OR, AND, NOT, NAND, NOR, XOR, etc., em encapsulamentos padronizados.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"circuito-eletrico\"><strong>Circuito el&#xE9;trico<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Interliga&#xE7;&#xE3;o de componentes que permite o fluxo ordenado de corrente. No estudo l&#xF3;gico, representamos apenas 0 e 1 (sem entrar em valores exatos de tens&#xE3;o\/corrente).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"circuito-integrado\"><strong>Circuito integrado (CI)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Conjunto miniaturizado de componentes (principalmente <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_40d6bdd1f492047a85e75c09097eff1b\" data-link=\"https:\/\/hangarmma.com.br\/blog\/semicondutores\/\" href=\"https:\/\/hangarmma.com.br\/blog\/semicondutores\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">semicondutores<\/a>) fabricado sobre um <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_7599cfa50e261c67f8656215ba54998d\" data-link=\"https:\/\/hangarmma.com.br\/blog\/substrato\/\" href=\"https:\/\/hangarmma.com.br\/blog\/substrato\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">substrato<\/a>. Re&#xFA;ne v&#xE1;rias <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_8a3e40c609f640b2be8192ce29481231\" data-link=\"https:\/\/hangarmma.com.br\/blog\/portas-logicas\/\" href=\"https:\/\/hangarmma.com.br\/blog\/portas-logicas\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">portas l&#xF3;gicas<\/a> em um &#xFA;nico encapsulamento.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"csdb\"><strong>CSDB (Commercial Standard Digital Bus)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Barramento digital ass&#xED;ncrono unidirecional usado em aplica&#xE7;&#xF5;es aeron&#xE1;uticas legadas. <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_b538845fda1d032e858fa6b8d5d0879c\" data-link=\"https:\/\/hangarmma.com.br\/blog\/velocidade\/\" href=\"https:\/\/hangarmma.com.br\/blog\/velocidade\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">Velocidade<\/a> t&#xED;pica citada: at&#xE9; 50 kbit\/s.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"entrada\"><strong>Entrada (sinal de entrada)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N&iacute;vel l&oacute;gico aplicado aos terminais de uma <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0edf0a5114cf353b504a6e6eccfceb5d\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>porta<\/a> (A, B, C&hellip;). A combina&ccedil;&atilde;o das entradas define o que aparecer&aacute; na sa&iacute;da, conforme a fun&ccedil;&atilde;o l&oacute;gica.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"expressao-booleana\"><strong>Express&#xE3;o booleana<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Equa&#xE7;&#xE3;o que descreve a fun&#xE7;&#xE3;o l&#xF3;gica (ex.: <em>S = A + B<\/em>, <em>S = &#xAC;(A &#xB7; B)<\/em>). Ajuda a converter entre s&#xED;mbolo, tabela-verdade e <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_8475a091b5ac4429a52bc047365d267e\" data-link=\"https:\/\/hangarmma.com.br\/blog\/circuito\/\" href=\"https:\/\/hangarmma.com.br\/blog\/circuito\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">circuito<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"inversor-not\"><strong>Inversor (Porta NOT)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0edf0a5114cf353b504a6e6eccfceb5d\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>Porta<\/a> de uma entrada que <em>inverte<\/em> o n&#xED;vel: se A=1, S=0; se A=0, S=1. Representa-se por um <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_dafc905ae0b4892d4430dce2b09843c9\" data-link=\"https:\/\/hangarmma.com.br\/blog\/triangle\/\" href=\"https:\/\/hangarmma.com.br\/blog\/triangle\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">tri&#xE2;ngulo<\/a> com um pequeno c&#xED;rculo na sa&#xED;da.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"lru\"><strong>LRU (Line Replaceable Unit)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Unidade substitu&#xED;vel em linha: m&#xF3;dulo que pode ser trocado rapidamente na aeronave. Em avi&#xF3;nicos, muitas LRUs cont&#xEA;m CIs com <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_8a3e40c609f640b2be8192ce29481231\" data-link=\"https:\/\/hangarmma.com.br\/blog\/portas-logicas\/\" href=\"https:\/\/hangarmma.com.br\/blog\/portas-logicas\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">portas l&#xF3;gicas<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"nivel-logico\"><strong>N&#xED;vel l&#xF3;gico (0 e 1)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Representa&#xE7;&#xE3;o de &#x201C;desligado\/ligado&#x201D; por faixas de tens&#xE3;o\/corrente. Na an&#xE1;lise l&#xF3;gica, tratamos apenas como 0 (falso) e 1 (verdadeiro).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"nand\"><strong>NAND<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">&#xC9; o complemento de AND. A sa&#xED;da &#xE9; 0 apenas quando <em>todas<\/em> as entradas s&#xE3;o 1. Express&#xE3;o: <em>S = &#xAC;(A &#xB7; B)<\/em>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"nor\"><strong>NOR<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">&#xC9; o complemento de OR. A sa&#xED;da &#xE9; 1 apenas quando <em>todas<\/em> as entradas s&#xE3;o 0. Express&#xE3;o: <em>S = &#xAC;(A + B)<\/em>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"or\"><strong>OR (Porta OU)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0edf0a5114cf353b504a6e6eccfceb5d\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>Porta<\/a> cuja sa&iacute;da &eacute; 1 quando <em>pelo menos uma<\/em> das entradas &#xE9; 1. Express&#xE3;o: <em>S = A + B<\/em>. Em paralelo com interruptores, a l&#xE2;mpada acende se qualquer um estiver ligado.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"portas-multiplas-entradas\"><strong>Portas com m&#xFA;ltiplas entradas<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vers&#xF5;es de OR\/AND (e derivadas) que aceitam n &#x2265; 2 entradas. Ex.: <em>S = A + B + C<\/em> (OR de 3 entradas).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"protocolo\"><strong>Protocolo (comunica&#xE7;&#xE3;o)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Conjunto de regras de sintaxe, sem&#xE2;ntica e sincroniza&#xE7;&#xE3;o que permite a <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_09e2f1cc48a95ea1e8945a1f73bfdcc7\" data-link=\"https:\/\/hangarmma.com.br\/blog\/comunicacao\/\" href=\"https:\/\/hangarmma.com.br\/blog\/comunicacao\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">comunica&#xE7;&#xE3;o<\/a> entre dispositivos. Em barramentos, define como bits 0\/1 s&#xE3;o trocados.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"rele\"><strong>Rel&#xE9;<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Componente eletromec&#xE2;nico que comuta contatos por a&#xE7;&#xE3;o magn&#xE9;tica. Pode implementar fun&#xE7;&#xF5;es l&#xF3;gicas (s&#xE9;ries\/paralelos), embora os CIs sejam mais comuns hoje.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"saida\"><strong>Sa&#xED;da (sinal de sa&#xED;da)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Resultado da fun&#xE7;&#xE3;o l&#xF3;gica aplicada &#xE0;s entradas. &#xC9; sempre <em>uma<\/em> por <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0edf0a5114cf353b504a6e6eccfceb5d\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>porta<\/a> elementar; alimenta outras portas ou cargas (LED, l&acirc;mpada, etc.).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"simbolo\"><strong>S&#xED;mbolo (portas l&#xF3;gicas)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Desenho padronizado usado em esquemas: AND (meia-lua reta), OR (meia-lua curva), NOT (<a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_dafc905ae0b4892d4430dce2b09843c9\" data-link=\"https:\/\/hangarmma.com.br\/blog\/triangle\/\" href=\"https:\/\/hangarmma.com.br\/blog\/triangle\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">tri&#xE2;ngulo<\/a> + bolinha), etc. A &#x201C;bolinha&#x201D; indica invers&#xE3;o.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"soma-logica\"><strong>Soma l&#xF3;gica ( + )<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Operador da &#xE1;lgebra Booleana que corresponde &#xE0; fun&#xE7;&#xE3;o OR. N&#xE3;o &#xE9; a mesma &#x201C;soma&#x201D; aritm&#xE9;tica &#x2014; exceto quando usamos XOR para modelar &#x201C;soma sem vai-um&#x201D;.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"tabela-verdade\"><strong>Tabela-verdade<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Quadro que lista todas as combina&ccedil;&otilde;es de entradas e o valor da sa&iacute;da para cada uma. &Eacute; o jeito mais direto de &ldquo;enxergar&rdquo; a fun&ccedil;&atilde;o da <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0edf0a5114cf353b504a6e6eccfceb5d\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>porta<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"ttl\"><strong>TTL (fam&#xED;lia 74xx)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tecnologia cl&#xE1;ssica de CIs l&#xF3;gicos. A s&#xE9;rie &#x201C;74xx&#x201D; oferece as mesmas fun&#xE7;&#xF5;es das fam&#xED;lias CMOS com caracter&#xED;sticas el&#xE9;tricas diferentes (corrente, <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_b538845fda1d032e858fa6b8d5d0879c\" data-link=\"https:\/\/hangarmma.com.br\/blog\/velocidade\/\" href=\"https:\/\/hangarmma.com.br\/blog\/velocidade\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">velocidade<\/a>).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"xor\"><strong>XOR (OU exclusivo)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Sa&#xED;da 1 quando as entradas s&#xE3;o <em>diferentes<\/em> (A &#x2260; B). &#xDA;til para detectar desigualdade e modelar &#x201C;soma sem transporte&#x201D;.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"xnor\"><strong>XNOR (equival&#xEA;ncia)<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Complemento do XOR. Sa&#xED;da 1 quando as entradas s&#xE3;o <em>iguais<\/em> (A = B). Usado como comparador l&#xF3;gico simples.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h2 class=\"wp-block-heading\"><strong>FAQ &#x2014; Perguntas Frequentes<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>P: Como relacionar s&#xED;mbolo, express&#xE3;o booleana e tabela-verdade?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">R: Comece pela tabela-verdade (todas as combina&#xE7;&#xF5;es). Da&#xED;, escreva a express&#xE3;o (ex.: para OR, <em>S = A + B<\/em>) e, por fim, associe ao s&#xED;mbolo. Esse &#x201C;<a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_dafc905ae0b4892d4430dce2b09843c9\" data-link=\"https:\/\/hangarmma.com.br\/blog\/triangle\/\" href=\"https:\/\/hangarmma.com.br\/blog\/triangle\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">tri&#xE2;ngulo<\/a>&#x201D; de representa&#xE7;&#xF5;es &#xE9; equivalente e facilita o estudo.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>P: Por que NAND e NOR s&#xE3;o chamados de &#x201C;portas universais&#x201D;?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">R: Porque, com elas, voc&#xEA; pode montar qualquer outra fun&#xE7;&#xE3;o l&#xF3;gica (NOT, AND, OR, XOR&#x2026;). Em <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_9f121fb8c1078cb5a639d70d35f8e941\" data-link=\"https:\/\/hangarmma.com.br\/blog\/maintenance\/\" href=\"https:\/\/hangarmma.com.br\/blog\/maintenance\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">manuten&#xE7;&#xE3;o<\/a>\/avi&#xF3;nicos, isso ajuda a substituir fun&#xE7;&#xF5;es usando o que h&#xE1; dispon&#xED;vel no estoque.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>P: O que muda entre TTL (74xx) e CMOS (40xx) para quem est&#xE1; na bancada?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">R: Margens de tens&#xE3;o, consumo e imunidade a ru&#xED;do. TTL consome mais corrente e opera em faixas de tens&#xE3;o t&#xED;picas de 5 V; CMOS consome menos e aceita uma faixa maior, &#xFA;til em sistemas de baixa <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_555b5d38d6960552ca65f98e44b9c9b6\" data-link=\"https:\/\/hangarmma.com.br\/blog\/potencia\/\" href=\"https:\/\/hangarmma.com.br\/blog\/potencia\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">pot&#xEA;ncia<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>P: &#x201C;Soma l&#xF3;gica&#x201D; &#xE9; a mesma coisa que a soma de n&#xFA;meros?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">R: N&#xE3;o. <em>+<\/em> em Boole representa OR. Para somar bits &#x201C;de verdade&#x201D; sem transporte usamos XOR; com transporte, precisamos de combinacionais (meio somador\/somador completo).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>P: Onde <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_8a3e40c609f640b2be8192ce29481231\" data-link=\"https:\/\/hangarmma.com.br\/blog\/portas-logicas\/\" href=\"https:\/\/hangarmma.com.br\/blog\/portas-logicas\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">portas l&#xF3;gicas<\/a> aparecem numa aeronave?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">R: Em LRUs e m&#xF3;dulos de avi&#xE3;oica (discretos, l&#xF3;gica de travamento, comparadores, detectores), em interfaces com sensores\/atuadores e em l&#xF3;gica de intertravamento de sistemas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>P: Por que usar buffer se ele &#x201C;n&#xE3;o faz nada&#x201D; com o n&#xED;vel?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">R: Ele fornece isolamento el&#xE9;trico e <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_d2ce78e2048f5b83340b4f0e46878a04\" data-link=\"https:\/\/hangarmma.com.br\/blog\/capacidade\/\" href=\"https:\/\/hangarmma.com.br\/blog\/capacidade\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">capacidade<\/a> de corrente, melhorando o acionamento de cargas\/est&aacute;gios seguintes e a integridade do <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_91c489c7b4ca42f1533d6f5ef808b70e\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/sinal\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/sinal\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>sinal<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>P: Posso ter portas com 3, 4&#x2026; entradas? Como leio a express&#xE3;o?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">R: Sim. Basta estender o operador: <em>S = A + B + C<\/em> (OR) ou <em>S = A &#xB7; B &#xB7; C<\/em> (AND). A tabela-verdade cresce com o n&#xFA;mero de entradas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>P: Qual a diferen&#xE7;a entre OR e XOR na pr&#xE1;tica?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">R: OR acende a sa&#xED;da quando pelo menos uma entrada &#xE9; 1 (inclui o caso A=1, B=1). XOR acende somente quando as entradas s&#xE3;o diferentes (A &#x2260; B).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>P: &#xC9; correto implementar l&#xF3;gica s&#xF3; com <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_7fe2a76f87e56c50289bc11712c33222\" data-link=\"https:\/\/hangarmma.com.br\/blog\/reles-2\/\" href=\"https:\/\/hangarmma.com.br\/blog\/reles-2\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">rel&#xE9;s<\/a>?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">R: Funciona e &#xE9; did&#xE1;tico (s&#xE9;ries = AND; paralelos = OR), mas &#xE9; lento, grande e sujeito a desgaste. Em aeronaves modernas, a l&#xF3;gica est&#xE1; em CIs\/placas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>P: Como conferir se uma <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0edf0a5114cf353b504a6e6eccfceb5d\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/porta\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>porta<\/a> do CI &ldquo;morreu&rdquo; em <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_068265665566ae80bef02051e8441e2d\"  data-link=\"https:\/\/hangarmma.com.br\/blog\/campo\/\"  href=\"https:\/\/hangarmma.com.br\/blog\/campo\/\"  target=\"_blank\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>campo<\/a>?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">R: Alimente o CI dentro da faixa, aplique combina&#xE7;&#xF5;es de entrada conhecidas e compare a sa&#xED;da com a tabela-verdade. Semelhante a um &#x201C;teste funcional&#x201D; b&#xE1;sico.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Os barramentos de dados numa aeronave permitem a comunica\u00e7\u00e3o entre si de uma grande variedade de equipamentos avi\u00f4nicos. Neste post vamos falar sobre os princ\u00edpios b\u00e1sicos dos diversos tipos de barramentos de dados comuns na avia\u00e7\u00e3o utilizados nas aeronaves modernas&#8230;<\/p>\n","protected":false},"author":1,"featured_media":6132,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[117,62],"tags":[17,123],"class_list":["post-6066","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-eletricidade-basica","category-manutencao","tag-eletrica","tag-eletricidade-basica"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>O que s\u00e3o portas l\u00f3gicas<\/title>\n<meta name=\"description\" content=\"S\u00e3o dispositivos que operam e trabalham com um ou mais sinais l\u00f3gicos de entrada para ter no final uma e somente uma sa\u00edda, de acordo com 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