Stands for Single In-line Memory Module. A small, compact circuit board with an connector along one edge that carries densely-packed memory chips, and is used to expand a computer's main memory. If you want to upgrade your PC by increasing the amount of RAM it has, you can fit more memory by inserting SIMM cards. Make sure that you buy the correct SIMMs for your computer. You need to check the type of connector, the speed of the RAM and the capacity of the SIMM or they might not work.
