Activities Manual for Programmable Logic Controllers
5th Edition
ISBN: 9781259679568
Author: Petruzella, Frank
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 4, Problem 9RQ
Program Plan Intro
a.
Logic gate:
- Logic gate is an electronic circuit that is used to perform logic decisions based on the input.
- It contains one or more number of inputs and one output.
- The working of logic gate is based on the binary principle that has two states either logic 0 or logic 1.
- The output of logic gate is produced when it satisfies any of its logic conditions.
- The logic condition depends upon the type of the gates and the number of inputs.
- The primary logic gates include AND, OR, and NOT. And the combinations of these gates are used to implement any of the other logic gates.
AND gate:
The two-input AND gate is a logic gate, whose output will be high when all the inputs are high and whose output will be low when any one of the inputs is low.
OR gate:
The OR gate is a logic gate, whose output will be high when any of the inputs are high and whose output will be low when all the inputs are low.
NOT function:
The NOT gate is a logic gate; whose output will be high when the input is low and whose output will be low when the input is high. In other words, NOT gate always complement or invert its output.
NAND gate:
The NAND gate performs the reverse operation of AND gate. The two-input NAND gate is a logic gate, whose output will be high if any of the inputs are low and whose output will be low when all the inputs are high.
NOR gate:
The NOR gate performs the reverse operation of OR gate. The two-input NOR gate is a logic gate, whose output will be high if both the inputs are low and whose output will be low when any one of the inputs is high.
Program Plan Intro
b.
Logic gate:
- Logic gate is an electronic circuit that is used to perform logic decisions based on the input.
- It contains one or more number of inputs and one output.
- The working of logic gate is based on the binary principle that has two states either logic 0 or logic 1.
- The output of logic gate is produced when it satisfies any of its logic conditions.
- The logic condition depends upon the type of the gates and the number of inputs.
- The primary logic gates include AND, OR, and NOT. And the combinations of these gates are used to implement any of the other logic gates.
AND gate:
The two-input AND gate is a logic gate, whose output will be high when all the inputs are high and whose output will be low when any one of the inputs is low.
OR gate:
The OR gate is a logic gate, whose output will be high when any of the inputs are high and whose output will be low when all the inputs are low.
NOT function:
The NOT gate is a logic gate; whose output will be high when the input is low and whose output will be low when the input is high. In other words, NOT gate always complement or invert its output.
NAND gate:
The NAND gate performs the reverse operation of AND gate.
NOR gate:
The NOR gate performs the reverse operation of OR gate.
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Activities Manual for Programmable Logic Controllers
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