Show how a full adder can be implemented using multiplexers.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
Show how a full adder can be implemented using multiplexers.
Expert Solution
Step 1
Explanation:
- A full adder is used to add 3 binary numbers.
- In which one bit is carry bit and other two are operand bit.
- Suppose a full adder is used to add three binary numbers (A, B, and C) then
- Sum and carry output is as follows.
Sum(S)= C+(A+B)
Carry(C)=(A+B)C+(A.B)
Step 2
Truth table:
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