Q.

The basic building blocks of the arithmetic unit in a digital computers are                          

A. subtractors
B. adders
C. multiplexer
D. comparator
Answer» B. adders
Explanation: the basic building blocks of the arithmetic unit in a digital computers are adders. since, a parallel adder is constructed with a number of full- adder circuits connected in cascade. by controlling the data inputs to the parallel adder, it is possible to obtain different types of arithmetic operations.
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