question_answer

The following truth table gives the output of a 2-inputs logic gate.

A	B	Output
0	0	1
0	1	0
1	0	0
1	1	0

(i) Identify the logic gate used and draw its logic symbol.

(ii) If the output of this gate is fed as input to a NOT gate, name the new logic gate so formed.

Answer:

(i) From the given truth table it is clear that the given gate is NOR gate. Logic symbol (ii) If the output of NOR gate is fed as an input to a NOT gate, then the truth table is

A	B	Y
0	0	0
0	1	1
1	0	1
1	1	1

This new gate is OR gate.