The logic circuit of binary adder which is used to add two 4-bits binary…
2017
The logic circuit of binary adder which is used to add two 4-bits binary numbers, requires ______ half adder(s) and ______ full adder(s).
- A.
4,0
- B.
1,3
- C.
2,2
- D.
3,1
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Correct answer: B
To add two 4-bit binary numbers : The least significant bit (LSB) has no carry-in , so it needs 1 Half Adder .
The remaining 3 bits need to handle carry, so they require 3 Full Adders .