CH 03 : Logic Gates And Logic Circuits

Logic Circuit

Multiple Logic Gates make a __

Truth Table

A table used to check the outputs from a logic gate or logic circuit.

Logic Gates

They take binary inputs and give binary outputs in an electronic circuit

NOT Gate

Logic gate with only one input and output is 1 only if input is 0

Note

When one input branches into two before entering a gate, the two branched inputs will always be same

AND Gate

Logic Gate with two inputs. Output is 1 when both inputs are 1.

OR Gate

Logic gate with two inputs. Output is 1 when any of the inputs is 1.

NAND Gate

Logic gate with two inputs. Output is 1 when both inputs are NOT 1.

NOR Gate

Logic Gate with two inputs. Output is 1 when none of the inputs is 1.

XOR Gate

Logic Gate with two inputs. Output is 1 only when inputs are different.

NOT Gate

AND Gate

OR Gate

NAND Gate

NOR Gate

XOR Gate