Output expression: Sum Pi=A⊕B Carry, Gi=AB Truth table:
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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I need explanintoin for these truth tables
Output expression:
Sum Pi=A⊕B
Carry, Gi=AB
Truth table:
| A | B | Sum Pi=A⊕B | Carry, Gi=AB |
| 0 | 0 | 0 | 0 |
| 0 | 1 | 1 | 0 |
| 1 | 0 | 1 | 0 |
| 1 | 1 | 0 | 1 |
The output expression of full adder circuit is
Sum, S=A⊕B⊕Ci
Carry,
C0=Gi+CiPi=AB+CiA⊕B
Truth table:
| A | B | Ci | Sum, S=A⊕B⊕Ci |
Carry, C0=AB+CiA⊕B |
| 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 1 | 1 | 0 |
| 0 | 1 | 0 | 1 | 0 |
| 0 | 1 | 1 | 0 | 1 |
| 1 | 0 | 0 | 1 | 0 |
| 1 | 0 | 1 | 0 | 1 |
| 1 | 1 | 0 | 0 | 1 |
| 1 | 1 | 1 | 1 | 1 |
Transcribed Image Text:Carry-in.
Ci
A
Pi
-Σ
B
Gi
Ci +1
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