Fast Adder & Serial Adder Objective Questions – Part 1

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:

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.

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?

In serial addition, the addition is carried out

The inverter can be produced with how many NAND gates?

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

What is ripple carry adder?

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

What are carry generate combinations?