Chapter B, Problem 34E

Explanation of Solution

Block diagram for carry save adder with 16-bits:

Explanation:

The above block diagram describes about the addition of 4 bit numbers in carry save adder. Here, 3 different bits are added to one adder.

The time unit is denoted by T and the above carry save adder includes the delay of 2T for each bit.

The number of 1-bit adders present in ripple carry adder is 13 and the delay can be calculated as follows

$\begin{array}{c}\text{Delay}\text{=}\text{13}\text{×}\end{array}$