What is diffrence between Volatile and Non Volatiles in Computer Primary Memory
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Volatile: data can disappear when power stops being supplied, i.e. RAM is volatile memory.
Non-volatile: data persists across power cycles, i.e. flash memory, hard disk drives, and magnetic tape drives are non-volatile.
Simply put, “volatile” memory needs power to retain its data. Non-volatile does not, and will hold the data while powered off. If power is lost, “volatile” memory is erased, typically to all `0` bits. It MIGHT last for a few seconds after power goes out, but don’t count on it.
The traditional examples are RAM for volatile, and a hard drive for non-volatile. Some specific devices blur the line intentionally, like a fast “hard drive” made of RAM but with a battery so it can last a short while without power. Or Intel’s “Optane” which is non-volatile, but actually can be bought in RAM stick shapes and plug into those connections on a server’s motherboard.
Volatile memory needs power to function. All data in volatile memory is lost when the computer is powered down.
Nonvolatile memory can store data, even without power.
They can both take on different physical forms, but that is the key fundamental difference between volatile and non-volatile.
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