User`s guide

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SIMM socket is only 72-pin, and is only single side. The golden finger signals on each side of PCB
are identical. That is why it was called Single In Line. SIMM is made by FPM or EDO
DRAM and
supports 32-bit data. SIMM had be
en phased out on current motherboard design.
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wire bus developed for component communication SMBus is also called I2C bus. It is a two-
(especially for semiconductor IC). For example, set clock of clock generator for jumper-less
motherboard. The data transfer rate of SMBus is only 100Kbit/s, it allows one host to communicate
with CPU and many masters and slaves to send/receive message.
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SPD is a small ROM or EEPROM device resided on the DIMM or RIMM. SPD stores memory
module information such as DRAM timing and chip parameters. SPD can be used by BIOS
to
decide best timing for this DIMM or RIMM.