Memory

In computing, a memory module is a printed circuit board on which memory integrated circuits are mounted. Memory modules permit easy installation and replacement in electronic systems, especially computers such as personal computers, workstations, and servers. The first memory modules were proprietary designs that were specific to a model of computer from a specific manufacturer. Later, memory modules were standardized by organizations such as JEDEC and could be used in any system designed to use them.

Types of memory module include:

TransFlash Memory Module
SIMM, a single in-line memory module
DIMM, dual in-line memory module
Rambus memory modules are a subset of DIMMs, but are usually referred to as RIMMs
SO-DIMM, small outline DIMM, a smaller version of the DIMM, used in laptops
Distinguishing characteristics of computer memory modules include voltage, capacity, speed (i.e., bit rate), and form factor.