Q-1 Show the level transitions in the input signal at the output line if Tp1 = 2ns, Tp2 = 2, Tp3=3ns, Tp4= 2 ns and assuming that all the transitions in input occur at t=0 Ans: At node A: We have transition after the delay of Tp1 = 2 ns and at t=2 a HIGH to […]

# Tag: questions

## Question: Implement XNOR gate using NOR only

Q- Implement 2 variable XNOR gate using NOR only in minimum number of gates. F= x XNOR y = (x XOR y)’ F’= (x XOR y) = x’y+xy’ = x’y+xy’+xx’+yy’ = (x+y) (x’+y’) F’= x’(x+y) + y’(x+y) Take compliment F= (x’(x+y) + y’(x+y))’ = (x’(x+y) )’ . (y’(x+y))’ =(x+(x+y)’). (y + (x+y)’) Take compliment again […]

## Parity Bit questions

Q1. Find out the parity bit (odd) for message 1100 As 1100 has 2 i.e. even number of 1’s so we take parity bit (odd) as 1 to make odd number of 1’s out of 5 bits So message we send is 11001 (5th is the parity bit) Q2. Find out the parity bit (even) for […]