RAM
Table of Contents

Definition

RAM (random access memory) is the place in a computer where the operating system, application programs, and data in current use are kept so that they can be quickly reached by the computer's processor. RAM is much faster to read from and write to than the other kinds of storage in a computer, the hard disk, floppy disk, and CD-ROM. However, the data in RAM stays there only as long as your computer is running. When you turn the computer off, RAM loses its data. When you turn your computer on again, your operating system and other files are once again loaded into RAM, usually from your hard disk.

Size

RAM is small, both in physical size and in the amount of data it can hold. It's much smaller than your hard disk. A typical computer may come with 2 megabytes of RAM and a hard disk that can hold 100 gigabytes bytes.

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