View source for Logic gate

A '''logic gate''' is an idealized or physical device that performs a [[Boolean function]], a logical operation performed on one or more binary inputs that produces a single binary output.

= Symbols =
{{Table alignment}}
{| class="wikitable defaultcenter"
|+
!Type
!ANSI symbol
!Boolean algebra
!Truth table
|-
! colspan="4" |Single-input gates
|-
|[[Buffer]]
|[[File:Buffer ANSI.svg]]
|<math>A</math>
|
{{Table alignment}}
{| class="wikitable defaultcenter"
|-  style="background:#def;"
|'''Input''' || '''Output'''
|- style="background:#def;"
| A || Q
|-
| {{no2|0}} || {{no2|0}}
|-
| {{yes2|1}} || {{yes2|1}}
|}
|-
|[[Inverter]]
|[[File:Inverter ANSI.svg]]
|<math>\overline A</math> or <math>\neg A</math>
|
{{Table alignment}}
{| class="wikitable defaultcenter"
|-  style="background:#def; text-align:center;"
| '''Input''' || '''Output'''
|- style="background:#def; text-align:center;"
| A || Q
|-
| {{no2|0}} || {{yes2|1}}
|-
| {{yes2|1}} || {{no2|0}}
|}
|-
|
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|-
|[[AND gate]]
|[[File:AND ANSI.svg]]
|<math>A \cdot B</math> or <math>A \land B</math>
|
|-
|[[OR gate]]
|[[File:OR ANSI.svg]]
|<math>A + B</math> or <math>A \lor B</math>
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|-
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|-
|[[NAND gate]]
|[[File:NAND ANSI.svg]]
|<math>\overline { A \cdot B }</math> or <math>\neg(A \land B)</math>
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|-
|[[NOR gate]]
|[[File:NOR ANSI.svg]]
|<math>\overline { A + B }</math> or <math>\neg(A \lor B)</math>
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|-
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|-
|[[XOR gate]]
|[[File:XOR ANSI.svg]]
|<math>A \oplus B</math> or <math>A \underline \lor B</math>
|
|-
|[[XNOR gate]]
|[[File:XNOR ANSI.svg]]
|<math>\overline { A \oplus B }</math> or <math>A \odot B</math>
|
|}
{{Stub}}
[[Category:Logic gates]]