Digital Electronics - Combinational Logic Circuits - Discussion

Discussion Forum : Combinational Logic Circuits - General Questions (Q.No. 44)
44.
A full-adder has a Cin = 0. What are the sum () and the carry (Cout) when A = 1 and B = 1?
= 0, Cout = 0
= 0, Cout = 1
= 1, Cout = 0
= 1, Cout = 1
Answer: Option
Explanation:
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Discussion:
1 comments Page 1 of 1.

Divya said:   1 decade ago
Here A is 1.
And B is 1.
And cin is 0.

For full adder circuit fist first we have to add A to B.

Then add the result to cin so the result is 0 because,
A+B i.e. 1+1=0.
And 0+cin i.e. 0+0=0.

Here when we are adding a and b, carry is produced.
So cout is 1.

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