{"id":92280,"date":"2025-06-01T11:19:49","date_gmt":"2025-06-01T11:19:49","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=92280"},"modified":"2025-06-01T11:19:49","modified_gmt":"2025-06-01T11:19:49","slug":"which-one-of-the-following-logic-gates-produces-true-output-when-both","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-logic-gates-produces-true-output-when-both\/","title":{"rendered":"Which one of the following logic gates produces true output when both"},"content":{"rendered":"

Which one of the following logic gates produces true output when both the values of its input are same?<\/p>\n

[amp_mcq option1=”NAND” option2=”NOR” option3=”XNOR” option4=”XOR” correct=”option3″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC CBI DSP LDCE – 2023<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nLet’s look at the truth tables for the gates with inputs A and B and output Q:
\n– NAND: Q = NOT (A AND B). Output is true unless both A and B are true.
\n– NOR: Q = NOT (A OR B). Output is true only when both A and B are false.
\n– XNOR: Q = NOT (A XOR B). Output is true when A and B are the same (both 0 or both 1).
\n– XOR: Q = A XOR B. Output is true when A and B are different (one 0, one 1).<\/p>\n

The question asks for the gate that produces true output when both inputs are the same. This matches the definition and truth table of the XNOR gate.
\n<\/section>\n

\nUnderstanding the basic logic operations and their truth tables is crucial for this question. XNOR (Exclusive NOR) outputs a true (1) when its inputs are identical (0,0 or 1,1).
\n<\/section>\n
\nXNOR is also known as the equivalence gate. It is often used in digital circuits for checking if two bits are equal. The XOR gate is the opposite of XNOR, producing a true output when inputs are different.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following logic gates produces true output when both the values of its input are same? [amp_mcq option1=”NAND” option2=”NOR” option3=”XNOR” option4=”XOR” correct=”option3″] This question was previously asked in UPSC CBI DSP LDCE – 2023 Download PDFAttempt Online Let’s look at the truth tables for the gates with inputs A and B and … <\/p>\n

Detailed SolutionWhich one of the following logic gates produces true output when both<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1086],"tags":[1105,1113],"class_list":["post-92280","post","type-post","status-publish","format-standard","hentry","category-upsc-cbi-dsp-ldce","tag-1105","tag-information-and-communication-technology","no-featured-image-padding"],"yoast_head":"\nWhich one of the following logic gates produces true output when both<\/title>\n<meta name=\"description\" content=\"Let's look at the truth tables for the gates with inputs A and B and output Q: - NAND: Q = NOT (A AND B). Output is true unless both A and B are true. - NOR: Q = NOT (A OR B). Output is true only when both A and B are false. - XNOR: Q = NOT (A XOR B). Output is true when A and B are the same (both 0 or both 1). - XOR: Q = A XOR B. Output is true when A and B are different (one 0, one 1). The question asks for the gate that produces true output when both inputs are the same. This matches the definition and truth table of the XNOR gate. Understanding the basic logic operations and their truth tables is crucial for this question. XNOR (Exclusive NOR) outputs a true (1) when its inputs are identical (0,0 or 1,1).\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-logic-gates-produces-true-output-when-both\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one of the following logic gates produces true output when both\" \/>\n<meta property=\"og:description\" content=\"Let's look at the truth tables for the gates with inputs A and B and output Q: - NAND: Q = NOT (A AND B). Output is true unless both A and B are true. - NOR: Q = NOT (A OR B). Output is true only when both A and B are false. - XNOR: Q = NOT (A XOR B). Output is true when A and B are the same (both 0 or both 1). - XOR: Q = A XOR B. Output is true when A and B are different (one 0, one 1). The question asks for the gate that produces true output when both inputs are the same. This matches the definition and truth table of the XNOR gate. Understanding the basic logic operations and their truth tables is crucial for this question. XNOR (Exclusive NOR) outputs a true (1) when its inputs are identical (0,0 or 1,1).\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-logic-gates-produces-true-output-when-both\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T11:19:49+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Which one of the following logic gates produces true output when both","description":"Let's look at the truth tables for the gates with inputs A and B and output Q: - NAND: Q = NOT (A AND B). Output is true unless both A and B are true. - NOR: Q = NOT (A OR B). Output is true only when both A and B are false. - XNOR: Q = NOT (A XOR B). Output is true when A and B are the same (both 0 or both 1). - XOR: Q = A XOR B. Output is true when A and B are different (one 0, one 1). The question asks for the gate that produces true output when both inputs are the same. This matches the definition and truth table of the XNOR gate. Understanding the basic logic operations and their truth tables is crucial for this question. XNOR (Exclusive NOR) outputs a true (1) when its inputs are identical (0,0 or 1,1).","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-logic-gates-produces-true-output-when-both\/","og_locale":"en_US","og_type":"article","og_title":"Which one of the following logic gates produces true output when both","og_description":"Let's look at the truth tables for the gates with inputs A and B and output Q: - NAND: Q = NOT (A AND B). Output is true unless both A and B are true. - NOR: Q = NOT (A OR B). Output is true only when both A and B are false. - XNOR: Q = NOT (A XOR B). Output is true when A and B are the same (both 0 or both 1). - XOR: Q = A XOR B. Output is true when A and B are different (one 0, one 1). The question asks for the gate that produces true output when both inputs are the same. This matches the definition and truth table of the XNOR gate. Understanding the basic logic operations and their truth tables is crucial for this question. XNOR (Exclusive NOR) outputs a true (1) when its inputs are identical (0,0 or 1,1).","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-logic-gates-produces-true-output-when-both\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T11:19:49+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-logic-gates-produces-true-output-when-both\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-logic-gates-produces-true-output-when-both\/","name":"Which one of the following logic gates produces true output when both","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T11:19:49+00:00","dateModified":"2025-06-01T11:19:49+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Let's look at the truth tables for the gates with inputs A and B and output Q: - NAND: Q = NOT (A AND B). Output is true unless both A and B are true. - NOR: Q = NOT (A OR B). Output is true only when both A and B are false. - XNOR: Q = NOT (A XOR B). Output is true when A and B are the same (both 0 or both 1). - XOR: Q = A XOR B. Output is true when A and B are different (one 0, one 1). The question asks for the gate that produces true output when both inputs are the same. This matches the definition and truth table of the XNOR gate. Understanding the basic logic operations and their truth tables is crucial for this question. XNOR (Exclusive NOR) outputs a true (1) when its inputs are identical (0,0 or 1,1).","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-logic-gates-produces-true-output-when-both\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-logic-gates-produces-true-output-when-both\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-logic-gates-produces-true-output-when-both\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC CBI DSP LDCE","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-cbi-dsp-ldce\/"},{"@type":"ListItem","position":3,"name":"Which one of the following logic gates produces true output when both"}]},{"@type":"WebSite","@id":"https:\/\/exam.pscnotes.com\/mcq\/#website","url":"https:\/\/exam.pscnotes.com\/mcq\/","name":"MCQ and Quiz for Exams","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/exam.pscnotes.com\/mcq\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209","name":"rawan239","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","caption":"rawan239"},"sameAs":["https:\/\/exam.pscnotes.com"],"url":"https:\/\/exam.pscnotes.com\/mcq\/author\/rawan239\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/92280","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/comments?post=92280"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/92280\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=92280"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=92280"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=92280"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}