Types of Computer Memory

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Types of Computer Memory:


Computer memory retains data that is to be processed by the CPU. Computer memory falls into two categories: nonvolatile memory, which is retained even when the computer is powered off; and volatile memory, data that is lost when the computer loses power.

Read-only memory (ROM): this is a type of nonvolatile memory that is preserved when the computer is powered off. When ROMs are manufactured a chip containing its contents is “burned in” and can’t be modified. These chips contain what’s known as “bootstrap” data and the power-on selftest (POST) diagnostics the computer uses to start up prior to loading the operating system.

Random access memory (RAM): a type of volatile memory that is vulnerable to power being lost on the computer. When this occurs, all data held in RAM is lost. The CPU relies on RAM for readable and writeable memory for processing tasks. RAM maintains its data when power is supplied to it. “Random” refers to the CPU being able to access or move data to and from any addressable RAM on the system.

Cache memory:

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