Single In Line Memory Module - 30 pins
SIMM-30 was the first memory module to obtain commercial success, developed over an old memory module type called SIPP. SIMM-30 modules are 8-bit modules and use FPM (Fast Page Mode) memory chips
Since it is an 8-bit module, its installation must be made like the following:
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286 and 386SX: Two in two, since the CPU accesses the memory using 16 bits.
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386DX, 486 and 5x86: Four in four, since the CPU accesses the memory using 32 bits.
This module was used up to 486 times, being gradually replaced by SIMM-72 memory module.
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Figure 1: SIMM-30 memory module.
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Figure 2: Motherboard with both SIMM-30 and SIMM-72 sockets.
Originally at http://www.hardwaresecrets.com/dictionary/term/282
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