Logic Gates: Other Representations


AND Gate

Normally Open SwitchTransistor
normally open switch AND gate as transistor
hand-drawn semiconductor version of AND gate semiconductor version of AND gate

Abstract Symbol for an AND Gate

AND gate symbol

OR Gate

Switch Diagram

OR gate implemented as switches

Abstract Symbol

OR gate symbol


OR gate as transistor

NOT Gate

Normally Closed Switch

normally closed switch

Abstract Symbol

NOT gate symbol


NOT gate as transistor

XOR Gate (Exclusive Or)

XOR - Alternative A

XOR circuit diagram

XOR - Alternative B

XOR circuit diagram

Abstract Symbol

XOR gate symbol

Alyce Brady, Kalamazoo College