PROGRAMMABLE LOGIC CONTROLLERS (LOOSE PA
5th Edition
ISBN: 9781264206216
Author: Petruzella
Publisher: MCG
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Textbook Question
Chapter 4, Problem 7RQ
State the logic instruction you would use when you want to:
- a. Know when one or both matching bits in two different words are 1.
- b. Reverse the state of bits in a word.
- c. Know when matching bits in two different words are both 1.
- d. Know when one or the other bit of matching bits, but not both, in two different words is 1.
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Students have asked these similar questions
1. Your goal is to design a circuit which has as input a number 0-9 represented in binary form.
The inputs are labeled A, B, C, D where A is the most significant bit. 10-15 represent "don't
care" conditions. The output is the sum of 3 and the input represented in binary form. The
outputs are labeled W, X, Y, Z where W is the most significant bit.
a. Create a truth table for the circuit.
b. Complete the Karnaugh maps for W and Y, minimizing the Boolean functions. Blank
K-maps are attached.
Write the Boolean equations for W and Y from the K-maps.
с.
2. Implement the following truth table directly (without any minimization) using a PLA. Properly
label the inputs and outputs.
Inputs
Outputs
A
C
D
X
Y
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3. Translate the following instruction to the equivalent vertical instruct
a. E := A-C
b. AC := A- (C+1)
c. AC := B – BAND (A, Not (D)
273.
The coding scheme that was designed to be used in combination with None Return to Zero- Invert (NRZ-I) is
a.
BSZS
b.
8RIlOR
c.
4D/5D
d.
R8ZS
Chapter 4 Solutions
PROGRAMMABLE LOGIC CONTROLLERS (LOOSE PA
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