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Digital electronics symbols / Logic gate symbols

Devices, components or electronic circuits that perform operations based on two states ( 1 - 0 ) needed to obtain the logical decisions. Logic circuits are composed of digital elements such as AND gate, OR gate, NOT gate and other complex combinations of these same circuits.

Symbology / Digital electronics symbols / Logic gate symbols
Symbol Description   Symbol Description

Logic gate symbols, ANSI system

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Logic gate, AND gate symbol Logic gate
AND gate
  Logic gate, OR gate symbo Logic gate
OR gate
Logic gate, NAND gate symbo Logic gate
NAND gate
  Logic gate, NOR gate symbo Logic gate
NOR gate
NAND logic gate tri-state symbol NAND logic gate tri-state   Exclusive OR logic gate symbol Logic gate OR exclusive
XOR gate
symbo of the logic gate that functions AND and NAND Logic gate that functions AND and NAND   XNOR symbol Logic gate NOR exclusive
XNOR gate
Symbol of the logic gate that functions OR and NOR Logic gate that functions OR and NOR   XNOR gate symbol Equivalent to logic gate XNOR
Buffer logic symbol Logic buffer   NOT symbol Logic inverter
NOT
Logic buffer tri-state symbol Logic buffer tri-state   Logic buffer denied symbol Logic buffer denied
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
Buffer gate symbol, DIN system Logic inverter
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

Flip-Flop symbols

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SR flip-flop NAND symbol SR Flip-Flop
NAND asynchronous
  SR flip-flop NOR symbol SR Flip-Flop
NOR asynchronous
SR flip-flop NAND symbol SR Flip-Flop
NAND latch, asynchronous
  SR flip-flop NOR symbol SR Flip-Flop
NOR asynchronous
SR symbol synchronous SR Flip-Flop
SR synchronous
  SR symbol synchronous SR Flip-Flop
SR latch, synchronous
SR flip-flop symbol SR Flip-Flop
Set Reset
  SR flip-flop symbol SR Flip-Flop
Set Reset
JK Flip-Flop symbol, high level JK Flip-Flop
master / slave
Activated by high level
  JK Flip-Flop symbol, low level JK Flip-Flop
master / slave
Activated by low level
JK Flip-Flop symbol, rising edge JK Flip-Flop
Activated by the rising edge
  JK Flip-Flop symbol, falling edge JK Flip-Flop
Activated by the falling edge
JK flip-flop symbol JK Flip-Flop
Activated by the falling edge
  JK flip-flop symbol JK Flip-Flop
Generic symbolD Flip-Flop
D Flip-Flop symbol D Flip-Flop
Generic symbol
  D Flip-Flop symbol D Flip-Flop
D Flip-Flop symbol, level D Flip-Flop
Active for level
  D Flip-Flop symbol, edge D Flip-Flop
Active Edge
D flip-flop symbol D Flip-Flop
Data / Delay
  D flip-flop symbol D Flip-Flop
Data / Delay
T flip-flop symbol T Flip-Flop
Toggle
  T Flip-Flop symbol T Flip-Flop
Toggle
T flip-flop symbol T Flip-Flop
Generic symbol
     

Electronic logic circuit symbols

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Chip logic, generic symbol Integrated circuit / IC
Chip logic
  Memory, generic symbol Memory
generic symbol
555 meter chrono symbol 555 meter-chrono   4 bit binary counter symbol 4 bit binary counter
7-segment decoder symbol 7-segment decoder   Decadic decimal coded binary counter, BCD symbol Decadic decimal coded binary counter, BCD
symbol of the decádico counter with 10 outputs encoded Decádico counter with 10 outputs encoded   Decoder 1 to 4 symbol Decoder 1 to 4
DAC symbol DAC
Analog to digital converter
  DAC symbol DAC
Analog to digital converter
ADC symbol ADC
Digital to Analog Converter
  Multiplexer symbol Multiplexer
Logic adder symbol Logic adder   Multiplexer, 2 in 1 out symbol Multiplexer, 2 in 1 out
Semi-adder symbol Semi-adder   Multiplexer, 4 inputs 1 output symbol Multiplexer, 4 inputs 1 output
CPU symbol Central Processing Unit
CPU
  1 input 4-output demultiplexer symbol 1 input 4-output demultiplexer

Display symbols

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Display 7-segment LED symbol Display 7-segment LED   Alphanumeric indicator LED symbol Alphanumeric indicator LED 5x7
Sample letters A
16-segment alphanumeric display symbol 16-segment alphanumeric display      

Symbols programming conventions

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Symbol of the programmable connection intact Programmable connection intact   fixed connection symbol Fixed connection
No connection symbol No connection      
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