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Random access memory: primary storage holding programs and data currently in use.

Random Access Memory: primary storage holding the programs and data currently being used by the computer.

When you open a word processor and a saved document, the instructions and data needed for your work are loaded into RAM, a type of primary storage. The CPU can then access them quickly as you type and edit. Saving your changes stores the updated document in secondary storage for future use.

Random access memory: read-and-write primary memory that holds programs and data currently in use. Its contents are lost when power is removed.

Random Access Memory: fast, read/write primary storage that holds data and instructions currently in use by the CPU.

Random access memory: the computer’s working memory, holding programs and data currently in use. It is volatile.

Do not say that primary storage consists only of RAM: it usually includes RAM and ROM.

For a comparison, pair the same characteristic: RAM is volatile, whereas ROM is non-volatile.

ROM holds start-up instructions, not the whole operating system. RAM holds the operating system while it is in use.