An adder in which the bits of the operands are added one after another is

A. Half-adder
B. Full-adder
C. Serial adder
D. All of the above

Check Answer

The correct answer is C) Serial adder.

An adder in which the bits of the operands are added one after another is a “Serial adder”.
In a serial adder, the bits of the operands are added one at a time, starting with the least significant bit (LSB) and working up to the most significant bit (MSB). The advantage of a serial adder is that it requires less hardware than a parallel adder, which adds all the bits of the operands simultaneously. However, a serial adder is slower than a parallel adder, because it takes longer to add each bit.
Option A (Half-adder) and Option B (Full-adder) are incorrect because these are types of adders that add two bits and three bits respectively, and they are not necessarily serial adders.
Option D (All of the above) is incorrect because not all half-adders and full-adders are serial adders.

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