Read write memory

Read-write memory is a type of computer memory that may be relatively easily written to as well as read from, that is, using electrical signalling normally associated with running software, and without other physical processes (unlike ROM or "read-only memory" and distinct from EEPROM). The related term RAM (for "random access memory") means something different; it refers to memory that can access any memory location in a constant amount of time.

The term might also refer to memory locations having both read and write permissions. In computer systems using memory segmentation, each segment has a length and set of permissions (for example, read, write, execute) associated with it.