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ISA bus
Last modified: Wednesday, October 13, 2004 

(Pronounced as separate letters or as eye-sa). Short for Industry Standard Architecture bus, the bus architecture used in the IBM PC/XT and PC/AT. The AT version of the bus is called the AT bus and became a de facto industry standard. Starting in the early 90s, ISA began to be replaced by the PCI local bus architecture. Most computers made today include both an AT bus for slower devices and a PCI bus for devices that need better bus performance.

In 1993, Intel and Microsoft introduced a new version of the ISA specification called Plug and Play ISA. Plug and Play ISA enables the operating system to configure expansion boards automatically so that users do not need to fiddle with DIP switches and jumpers.

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For internet.com pages about ISA bus . Also check out the following links!

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PC system bus reference guide 
A complete look at the PC's system I/O buses. Includes coverage of the various functions and features of the bus, a look at ISA, VLB and PCI buses, plus older technologies, and the new AGP port.

The PCI Industrial Computer Manufacturers Group
The PCI Industrial Computer Manufacturers Group is a consortium of over 160 industrial computer product vendors who develop specifications for PCI-based systems and boards for use in industrial computing applications. Their site contains links to product information, specifications, and membership information.

Video System Interfaces
Describes the various video bus interfaces as well as related concepts. This page is from "The PC Guide."

related categories

Buses

Miscellaneous Standards

related terms

bus

cache coherence

EISA

local bus

PCI

plug-and-play


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