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ISA
Industry Standard Architecture (ISA) expansion slots are capable of accomodating 8 or 16 bit expansion cards.
The ISA slots allow a variety of peripherals to be attached to the system.
Originally developed for the IBM-PC computer (8086, 8 bit bus), it was extended in 1984 to support 16 bits when the 80286AT computer was introduced. Its main features are:-
single bus master.
8/16 bit data width
15 edge triggered interrupts supported basic data transfer rate of 5.3 MBPS (Mega Bits Per Second).