Y D3 1 2 x 1 MUX A1 D₂ Y 2 to 4 Ао Decoder × D1 X 1 2 x 1 MUX Do A1 Ао 2 to 4 Decoder D3 D₂ D1 0 OUT 3 OUT2 OUT1 OUTO Y OUT3 OUT2 OUT1 OUTO 0 0 0 1 1 0 1 1

Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Question
a. Using a multi-bit adder structure design a circuit that accepts a
3-bit unsigned number n and computes (n - 6) as a 4-bit unsigned binary number.
Finally, draw the same circuit using logic gates only.
Hint – Your final output should be the 4-bit sum and the carry out of the MSB.
 
b. Consider the combinational circuit below. Use this circuit to fill
out the truth table shown below.
 
 
 
Y
D3
1
2 x 1
MUX
A1
D₂
Y
2 to 4
Ао
Decoder
×
D1
X
1
2 x 1
MUX
Do
A1
Ао
2 to 4
Decoder
D3
D₂
D1
0
OUT 3
OUT2
OUT1
OUTO
Y
OUT3
OUT2
OUT1
OUTO
0
0
0
1
1
0
1
1
Transcribed Image Text:Y D3 1 2 x 1 MUX A1 D₂ Y 2 to 4 Ао Decoder × D1 X 1 2 x 1 MUX Do A1 Ао 2 to 4 Decoder D3 D₂ D1 0 OUT 3 OUT2 OUT1 OUTO Y OUT3 OUT2 OUT1 OUTO 0 0 0 1 1 0 1 1
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