Fast Adder & Serial Adder Objective Questions – Part 1

A D flip-flop is used in a 4-bit serial adder, why?

How many NOT gates are required to implement the Boolean expression: X = AB’C + A’BC?

If minuend = 0, subtrahend = 1 and borrow input = 1 in a full subtractor then the borrow output will be:

In serial addition, the addition is carried out

What are carry generate combinations?

One positive pulse with tw = 75 µs is applied to one of the inputs of an exclusive-OR circuit. A second positive pulse with tw = 15 µs is applied to the other input beginning 20 µs after the leading edge of the first pulse. Which statement describes the output’s relation with the inputs?

The carry look ahead adder is based on the principle of looking at the lower order bits of ________ and ________ if a high order carry is generated.

What is ripple carry adder?

How many shift registers are used in a 4 bit serial adder?

The inverter can be produced with how many NAND gates?