It is a small sized chip; light but quite expensive and used for storing programs, data and information.

It is also called read/write memory, referring to the retrieving and storing of information in memory.ram which is used for primary storage is volatile.

          The memory size of a computer is usually specified in bytes, where a byte is the amount of storage for a group of 8 bits. A bit can be used to store a ‘0” or a “1”.