Registers

Question 1

Numbers of flip flops required for a register.

Answer 1

Registers stores n-bit memory. We need ‘n’ flip flops for making a register.

Question 2

What are shift registers?

Answer 2

Number of flip flops connected together such that data may be shifted into or out of them.

Question 3

What are the different types of shift registers?

Answer 3

1) serial in serial out
2) serial in parallel out
3) parallel in serial out
4) parallel in parallel out

Question 4

What are left and right shift registers ?

Answer 4

Left shift registers - takes input from MSB to LSB and bits move towards left.

Right shift registers - takes input from LSB to MSB and bits moves towards right.

Question 5

For LSR if initial value is 0010 what will be the output after 3 clock pulse?

Answer 5

Ans) 0000

Question 6

For RSR if initial value is 1111 what will be the output after 3 clock pulse?

Answer 6

Ans) 0001

Question 7

For LSR with input as 1010 with initial value 0000 how many clock pulse are needed?

Answer 7

Ans) 4

Question 8

For RSR initial value 0010 after how many clock pulse we will get output as 0000?

Answer 8

Ans) 2 pulse

Question 9

For RSR, if initial state is 0110. Let bits at one’s and tenths postion is connected to an Ex-OR gate via serial in. What is the output after 3 clock pulse?

Answer 9

Ans) 1010