State & prove De-Morgan‟s law using truth table. – InterviewSolution

1.

State & prove De-Morgan‟s law using truth table.

Answer»

De-morgan‟s Law: (A+B)‟ = A‟.B‟

(A.B)‟ = A‟+B‟

Proof using Truth Table

A	B	A+B	(A+B)'	A'	B'	A'.B'
0	0	0	1	1	1	1
0	1	1	0	1	0	0
1	0	1	0	0	1	0
1	1	1	0	0	0	0

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