What is the difference between memory and external storage?

The main differences between computer memory and external storage are the difference between volatile and non-volatile, and between performance and capacity.

1. The difference between volatility and volatility

Memory, such as random access memory (RAM), is volatile. This means that when the system loses power, data is lost. In contrast, external storage is non-volatile, so it retains data even when there is no power supply.

2. Different performance

In most cases, external memory is much slower than memory. Unlike external memory, RAM is directly connected to the CPU through a wider and faster bus.

3. Different storage durations

The memory will not be retained after power off, but the external storage can be retained for a long time

4.Different access rights

CPU can only directly When accessing memory, things in external storage must first go to the memory CPU before they can be processed.

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