Single In-line Memory Module - an industry standard plug-in memory card as used in the RiscPC, for example - there are two standard sizes, 30-pin and 72-pin - RiscPCs use 72-pin SIMMs
Found on http://www.archivemag.co.uk/
(Digital cameras and photo printers) Single In-line Memory Module. A common type of plug-in RAM memory module for personal computers. Found on http://www.encyclo.co.uk/local/20472
Single In-Line Memory Module - RAM generally used in older 486 and pentium computers. Denoted by either 30 or 72 pin configurations, available from 1-32 megs. Found on https://www.encyclo.co.uk/local/22026