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Last modified: Tuesday, June 08, 2004 

Short for Peripheral Component Interconnect, a local bus standard developed by Intel Corporation. Most modern PCs include a PCI bus in addition to a more general ISA expansion bus. PCI is also used on newer versions of the Macintosh computer.

PCI is a 64-bit bus, though it is usually implemented as a 32-bit bus. It can run at clock speeds of 33 or 66 MHz. At 32 bits and 33 MHz, it yields a throughput rate of 133 MBps. Also see PCI-X and PCI Express.

Although it was developed by Intel, PCI is not tied to any particular family of microprocessors.

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For pages about PCI . Also check out the following links!

Related Links

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.

PCI Special Interest Group (SIG) home page
The PCI SIG page offers information on PCI, the PCI SIG organization, news, information on members, bylaws, and membership information.

Peripheral Component Interconnect (PCI) Local Bus
Explains how the PCI bus functions in areas such as: performance, interrupts, mastering, and plug and play. This page is from "The PC Guide".

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."

Yahoo!'s PCI page
Yahoo!'s directory of PCI.

Sponsored listings

Quatech: Serial Port PCMCIA Cards - Offers 1, 2, and 4-port serial PCMCIA cards for mobile systems that function as standard COM ports. Win. 9x-XP, Win CE/PocketPC, and Linux supported.

MEN Micro: CompactPCI and PXI Products - Produces standard and custom board-level solutions qualified for highly reliable operation in industrial embedded applications and harsh environments.

Motorola: CompactPCI and PXI Products - Provides seamless mobility solutions for broadband, embedded systems and wireless networks, enabling fast, flexible, and cost-effective communication.

VXI Technology: install pci card - Supplies high-density modular test instruments and switching systems for both electrical and mechanical test applications.

Acqiris: CompactPCI and PXI Products - Manufactures data conversion and data acquisition products including digitizers, time-to-digital converters, waveform analyzers and more.

related categories


Peripheral Devices


related terms



bus mastering

cache coherence


expansion bus




local bus


PCI Express


target initiated termination

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