Digital Logic

1:

 What logic function is performed by the circuit shown below?
Nand gate circuit

A.

Ring counter

B.

Ripple counter

C.

Full adder

D.

Half adder

 

Answer : D

Explanation :

Here total 7 NAND gates are present  and in half adder one AND and one EX-OR gate are required.
In turn  one EX-OR gate can be built by 5 NAND
where as one AND gate can be built by 2 NAND  gates
so this is  diagram of half adder. So the answer is (D).

wdw said: (8:41pm on Sunday 5th January 2014)
Option D is Correct

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Option: A

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