Discussion :: Digital Computer Electronics - Section 2 (Q.No.3)
The m-bit parallel adder consists of:
Answer: Option D
No answer description available for this question.
|Abbas said: (Jul 12, 2014)|
|Please explain whether it wl b m or m-1 adders. A book I read is saying m-1 address but no explanation is provided.|
|Rahul said: (Jan 3, 2016)|
|Answer should be---->> m-1.
We need an adder for every bit. So we should need m full adders. A full adder adds a carry bit to two inputs and produces an output and a carry.
But the most significant bits can use a half adder, which differs from the full adder as in that it has no carry input, so we need m-1 full adders in m bit parallel adder.
|Parul said: (Jul 13, 2018)|
|The exact answer is m-1 full adders and 1 half adder (for carry) but as per the options, it should be m-1.|
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