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Logic Gate Symbols (Digital Electronics)

Logic gates are electronic devices that perform operations based on two states (1 - 0) necessary to obtain logical decisions.

Symbology of Logic Gates (Digital Electronics)

Symbol Description Symbol Description

Logic Gate Symbols, ANSI System

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Logic gate, AND gate symbol Logic gate
AND gate
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  Logic gate, OR gate symbol Logic gate
OR gate
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Logic gate, NAND gate symbol Logic gate
NAND gate
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  Logic gate, NOR gate symbol Logic gate
NOR gate
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NAND logic gate tri-state symbol NAND logic gate tri-state   Logic gate exclusive OR symbol Logic gate exclusive OR
XOR gate
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Symbol of logic gate that functions as an AND and a NAND Logic gate that functions as an AND and a NAND   XNOR symbol Logic gate exclusive NOR
XNOR gate
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Symbol of logic gate that functions as an OR and a NOR Logic gate that functions as an OR and a NOR   XNOR gate symbol Equivalent to logic gate XNOR
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Buffer logic symbol Logic buffer   NOT symbol Logic inverter
NOT
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Logic buffer tri-state symbol Logic buffer tri-state
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  Negated logic buffer symbol Negated logic buffer
Differential symbol Differential   Logic driver symbol Logic driver

Logic Gate Symbols, British System (BS 3939)

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AND gate symbol Logic gate
AND gate
  OR gate symbol Logic gate
OR gate
AND gate symbol Logic gate
AND gate
  OR gate symbol Logic gate
OR gate
NAND gate symbol Logic gate
NAND gate
  NOR gate symbol Logic gate
NOR gate
NAND gate symbol Logic gate
NAND gate
  NOR gate symbol Logic gate
NOR gate
XOR gate symbol Exclusive OR logic gate
XOR gate
  XNOR gate symbol Exclusive NOR logic gate
XNOR gate
Buffer symbol Buffer   XOR gate symbol Exclusive OR logic gate
XOR gate
NOT symbol Logic inverter
NOT
  Inverter Schmitt symbol Inverter Schmitt

Logic Gate Symbols, IEC System

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AND gate symbol Logic gate
AND gate
  OR gate symbol Logic gate
OR gate
NAND gate symbol Logic gate
NAND gate
  NOR gate symbol Logic gate
NOR gate
XOR gate symbol Exclusive OR logic gate
XOR gate
  Buffer symbol Buffer
XNOR gate symbol Exclusive NOR logic gate
XNOR gate
  NOT symbol Logic inverter
NOT

Logic Gate Symbols, DIN System

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AND gate symbol, DIN system Logic gate
AND gate
  OR gate symbol, DIN system Logic gate
OR gate
NAND gate symbol, DIN system Logic gate
NAND gate
  NOR gate symbol, DIN system Logic gate
NOR gate
XOR gate symbol, DIN system Logic gate XOR   XNOR gate symbol, DIN system Logic gate XNOR
XOR gate symbol, DIN system Logic gate XOR   XNOR gate symbol, DIN system Logic gate XNOR
Logic buffer gate symbol, DIN system Logic Buffer   NOT gate symbol, DIN system Logic inverter
NOT gate

Logic Gate Symbols, NEMA System

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AND gate symbol Logic gate
AND gate
  OR gate symbol Logic gate
OR gate
NAND gate symbol Logic gate
NAND gate
  NOR gate symbol Logic gate
NOR gate
NOT symbol Logic inverter
NOT
  XOR gate symbol Exclusive OR logic gate
XOR gate

Symbols of Programming Conventions

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Symbol of intact programmable connection Intact programmable connection   fixed connection symbol Fixed connection
No connection symbol No connection      
Logic circuits symbols (Digital Electronics)
Flip-Flop symbols (Digital Electronics)
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