Bus di I/O: ISA, MCA, EISA

• XT: processore 8088, 8 bits, 4.77 MHz.

• ISA: 1984, 80286, 16 bits, 8.33 MHz.

• MCA (Micro Channel Architecture): IBM ‘87, 32 bits, bus mastering, PnP, incompatibile con ISA, proprietario IBM, 8 MHz.

• EISA: 32 bits,8.33, PnP, compatibile ISA, bus mastering, 10 MHz, insuccesso.

Note: