Question
Download Solution PDFThe circuit shown below is a :
This question was previously asked in
KVS TGT WET (Work Experience Teacher) 23 Dec 2018 Official Paper
Answer (Detailed Solution Below)
Option 1 : Half subtractor
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Detailed Solution
Download Solution PDFConcept:
A half subtractor is a combinational circuit that is used to perform the subtraction of two single-bit words, i.e. it requires 2 input bits.
It subtracts two single-bits A & B and produces difference d & borrow b.
The equation for half subtractor is :
d = A'B + AB' or A ⊕ B
b = A'B
Truth Table for half subtractor:
| A | B | Difference | Borrow |
|---|---|---|---|
| 0 | 0 | 0 | 0 |
| 0 | 1 | 1 | 1 |
| 1 | 0 | 1 | 0 |
| 1 | 1 | 0 | 0 |
Circuit Diagram:
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