Definition of Memory Module
Memory modules perform an important function in PCs, Macs and various laptops. They help make computers run. There is not one type of memory module since the term expresses a broad array of memory chips that are used in the computer's motherboard to help it function. Each type of memory chip has certain functions and can be used for certain types of computers.
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Definition
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Memory module is a term that is used to define the series of dynamic random access memory. The memory module is mounted on a narrow circuit board on which the memory chips are attached.
Types
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There are various types of memory modules. They include: Dual Inline Package (DIP); TransFlash Memory Module; Single Inline Pin Package (SIPP); Single Inline Memory Module (SIMM); Dual Inline Memory Module (DIMM). RIMMs are a subset of DIMMs and use different pin settings. Small Outline DIMM (SO DIMM) is a smaller version of a DIMM used in laptops.
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Features
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Computer memory modules have certain characteristics that are general regardless of type. They include voltage, capacity, speed (the rate in which data is transferred) and form factor. Despite their characteristic similarities, modules do differ in terms of size and pin configurations. Newer versions of SIMM chips have 72 pins (the pins determine how the chips will be attached to the motherboards in computers). DIMMs have 168-pin configurations, though the number of pins in some chips can reach 240. SO DIMMs come in 72-pin, 144-pin and 200-pin configurations.
Singles & Pairs
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SIMM and RIMMs (Rambus modules) can be installed in computers in either pairs or singles. Some of the earlier SIMMs and RIMMs were installed in pairs, but DIMMs were generally installed as singles. Performance can be enhanced by installing pairs of DIMMs in computers that are supported by dual channel DDR-SDRAMs (Double Data Rate-Synchronous DRAMs).
PCs & Macs
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PCs and MACs have different requirements for memory modules. PCs generally use two types of bit memories: nine-bit memory with 80 bits and parity, or eight-bit memory that does not include parity. Most Macs use eight-bit memory with no parity.
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