A D flip-flop is used in a 4-bit serial adder, why?
A. It is used to invert the input of the full adder
B. It is used to store the output of the full adder
C. It is used to store the carry output of the full adder
D. It is used to store the sum output of the full adder
Answer:C
A D flip-flop is used in a 4-bit serial adder, why?
A. It is used to invert the input of the full adder B. It is used to store the output of the full adder C. It is used to store the carry output of the full adder D. It is used to store the sum output of the full adder
Explanation: The D flip-flop, i.e. carry flip-flop, is used to store the carry output of the full adder so that it can be added to the next significant position of the numbers in the registers.