Question

What is meant by non-volatile?

Answer 1

Non-volatile memory (NVM) or non-volatile storage is a type of computer memory that can retain stored information even after power is removed. In contrast, volatile memory needs constant power in order to retain data.

Answer 2

There are different meaning of non volatile-
In computer science it is (of a computer's memory) retaining data even if there is a break in the power supply.

In chemistry the meaning is not turning readily into gaseous form.

Hope u understood
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Steve