Comparison on volatile and non-volatile memory elements:

Volatile memory elements Nonvolatile memory elements
Volatile memory loses all its stored information when there is no power supply connected to it. Nonvolatile memory can retain its stored information even when the power is accidentally or intentionally removed.
Here, the memory can be easily altered. Here, the memory cannot be altered.
They have effects on the system performance...

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Chapter 2, Problem 46RQ

Chapter 2, Problem 48RQ

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Chapter 2 Solutions

Programmable Logic Controllers

Ch. 2 - Prob. 1RQ Ch. 2 - What is the function of a PLC output interface...Ch. 2 - Prob. 3RQ Ch. 2 - Prob. 4RQ Ch. 2 - Prob. 5RQ Ch. 2 - Prob. 6RQ Ch. 2 - Prob. 7RQ Ch. 2 - Prob. 8RQ Ch. 2 - Prob. 9RQ Ch. 2 - Prob. 10RQ

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Volatile memory elements	Nonvolatile memory elements
Volatile memory loses all its stored information when there is no power supply connected to it.	Nonvolatile memory can retain its stored information even when the power is accidentally or intentionally removed.
Here, the memory can be easily altered.	Here, the memory cannot be altered.
They have effects on the system performance...

Solution Summary: The author compares volatile and non-volatile memory elements, stating that volatile memory loses all its stored information when there is no power supply connected to it.

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Chapter 2 Solutions