RAM SIMM

•          Single In-Line Memory Module

•          FPM (Fast Page Mode) DRAM

•          30 or 72 pin connector

•          30-pin SIMM could send/receive 8 bits of data

•          Parity checking

•          Installed in pairs due to 16 bit memory bus of the 80286 processors

•          72-pin SIMM could send/receive 32 bits of data

•          80386 and 80486 processors had a 32 bit memory bus and used 72 pin SIMMs allowing up to 256Mb RAM

•          A SIMM can be single or double sided