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ECET 105 Week 6 Homework Assignment # 6 | RATED A+ | DeVry University
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ECET 105 Week 6 Homework Assignment # 6 | RATED A+ | DeVry University
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ECET105—Digital Circuits and SystemsHomework Assignment #6
Name Kaylen Lomax-Lofton
1. When a HIGH is on the output of the decoding circuit below, what is the binary code
appearing on the inputs?
The binary code is 0001. It’s 0001 because without the inverters on A0, A1, and A2, it
would be 1111.
2. Write the Boolean equations for each of the following codes if an active-LOW decoder
output is required. The first decode is shown as an example.
a. 1101
A3*A2*A1*A0
b. 11011
(A4.A3*A2’*A1’*A0)’
c. 101010
(A5.A4’*A3*A2’*A1*A0’)’
d. 1110110
(A6*A5.A4*A3’*A2*A1*A0’)’
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, 3. What are the active outputs of a BCD-to-7 segment decoder with an input of 0100?
3.1. a, c, f, g 3.2. b, c, f, g 3.3. b, c, e, f 3.4. b, d, e, g
4. A 7-segment decoder/driver drives the display below. Using the waveforms shown,
determine the sequence of digits that appear on the display.
A
B
F
G
C
E
D
A0
A1
A2
A3
Number Displayed
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ECET-105 Homework Assignment #6 Page 2 of 6
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