ADD = 1, SUB = 0. B3 B3 B2 B2 В, в, B. Bo The sum is always 1 more than it should be. ADD ADD = 0, SUB = 1. The E outputs are always equal to [A] - [B]. SUB 4 A technician breadboards the B3 B2 B, adder/subtractor. During testing, she finds that whenever an addition is performed, the result is 1 more than expected, and when a subtraction is performed, the result is 1 less than expected. What is the likely error that the technician made in connecting this B. 12 11 10 9. circuit? Co 74LS283 C4 4-bit parallel adder A3 A2 Ao Σ Σ Σ Σο

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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Question
ADD = 1, SUB = 0.
B3 B3
B2 B2
В, в,
Во Во
The sum is always 1
ADD
more than it should be.
7
ADD = 0, SUB = 1.
The E outputs are
always equal to [A] - [B].
SUB
8
A technician breadboards the
B3
adder/subtractor. During testing, she finds
that whenever an addition is performed, the
result is 1 more than expected, and when a
subtraction is performed, the result is 1 less
than expected. What is the likely error that
the technician made in connecting this
B2
B,
Bo
12
11
10
circuit?
Co
74LS283
C4
4-bit parallel adder
Аз
A2
A,
Ao
K
Transcribed Image Text:ADD = 1, SUB = 0. B3 B3 B2 B2 В, в, Во Во The sum is always 1 ADD more than it should be. 7 ADD = 0, SUB = 1. The E outputs are always equal to [A] - [B]. SUB 8 A technician breadboards the B3 adder/subtractor. During testing, she finds that whenever an addition is performed, the result is 1 more than expected, and when a subtraction is performed, the result is 1 less than expected. What is the likely error that the technician made in connecting this B2 B, Bo 12 11 10 circuit? Co 74LS283 C4 4-bit parallel adder Аз A2 A, Ao K
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