SIMM

n. (Computers) module comprised of a small circuit board containing several RAM memory chips (connected to the motherboard to increase total RAM memory)

A SIMM, or single in-line memory module, is a type of memory module used for random access memory in older personal computers. It differs from a DIMM (the most predominant form of memory module today) in that the contacts on a SIMM are redundant on both sides of the module. Most early PC motherboards (8088 based PCs and XTs) used socketed DIP chips. With the introduction of 286 based PC/ATs, which could use larger amounts of memory, memory modules evolved to save motherboard space and to ease memory expansion. Instead of plugging in 8 or 9 single DRAM DIP chips, only one additional memory module was needed to increase the memory of the computer. A few 286-based computers used (often non-standard) memory modules like SIPP memory (single in-line pin package). SIPP's 30 pins often bent or broke during installation, which is why they were quickly replaced by SIMMs which used contact plates rather than pins.
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Simm may refer to:SIMM (single in-line memory module), a type of memory module used in computersPeople:John Simm (born 1970), an actor and musicianKevin Simm (born 1980), a vocalistPaul Simm, a British songwriter, musician and music producer specialising in contemporary R&B and pop music
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Single in-line memory module

SIMM

= SIMM (single in line memory module).
Ex: The author examines the evolution of commodity memory from DIPs (Dual in line memory module) to SIMMs (single in line memory module) and discusses why DIMMs (dual in line memory modules) will be the norm for the next few years.