NOR Gate

The logic NOR gate is a combination of the digital logic OR gate with that of an inverter NOT gate connected togather in series.

" If both A & B are Not true , than Q is true."

Transistor NOR Gate

The Universal "NOR" Gate
NOR Gate can used to produce  any type of logic gate function connecting them togather in various combinations the three basic gate types of AND , OR, NOT  function can be formed using NOR Gate.


Various Logic Gates using NOR Gate

TTL Logic NOR Gate

74LS02 Quad 2 input

74LS27 Triple 3-input

74LS260 Dual 4-input 

CMOS Logic  NOR Gates

CD4001 Quad 2 Input

CD4025 Triple 3 Input

CD4002 Dual 4 Input

Other Gates

AND Gate

OR Gate

NOT Gate

.NAND Gate