An 8-bit carry-select adder is given below. If the propagation delay for a gate is 2 nsec, how long does it take for the complete result [s7:s0] of an 8-bit addition to appear? Assume a full adder incurs a 2-gate delay to generate the sum and a 3-gate delay to generate the carry out. 8-bit Carry-Se lect AdderCOA0c inSOBOCoutC1A1CinS1В1CoutC2A2CinS2B2CoutC3A3C inS3B3CoutMUXC4S4A4A4C in504S14В4В4C OutC5C5A5ASMUXc inS05S15SSB585CoutC6C6A6A6S06S16MUXB6S6B6C7A7S17A7S07MUX87B7Ccut57C8C8十

Answered: An 8-bit carry-select adder is given…

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

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An 8-bit carry-select adder is given below. If the propagation delay for a gate is 2 nsec, how long does it take for the complete result [s7:s0] of an 8-bit addition to appear? Assume a full adder incurs a 2-gate delay to generate the sum and a 3-gate delay to generate the carry out.

8-bit Carry-Se lect Adder
CO
A0
c in
SO
BO
Cout
C1
A1
Cin
S1
В1
Cout
C2
A2
Cin
S2
B2
Cout
C3
A3
C in
S3
B3
Cout
MUX
C4
S4
A4
A4
C in
504
S14
В4
В4
C Out
C5
C5
A5
AS
MUX
c in
S05
S15
SS
B5
85
Cout
C6
C6
A6
A6
S06
S16
MUX
B6
S6
B6
C7
A7
S17
A7
S07
MUX
87
B7
Ccut
57
C8
C8
十

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