EISA

(Extended ISA) Pronounced "ee-suh." A PC bus standard that extends the 16-bit ISA bus (AT bus) to 32 bits and provides bus mastering. ISA cards can plug into an EISA slot. It was announced in 1988 as a 32-bit alternative to the Micro Channel that would preserve investment in existing boards. However, EISA runs at the slow 8 MHz speed of the ISA bus in order to accommodate any ISA cards that may be plugged into it. EISA has been superseded by PCI. See PC data buses.

Types of Expansion Boards

EISA has been superseded by the PCI bus.

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EISA - Extended Industry-Standard Architecture