PCI

In most computing contexts, PCI stands for peripheral component interconnect, a local bus standard developed by Intel. Although PCI buses are no longer the standard, at one time they used 47 pins to connect sound cards, network cards, and video cards to a computer. They were available in 32- or 64-bit versions and able to run at clock speeds of either 33 or 66 MHz. (A 32-bit PCI bus running at 33 MHz would yield a throughput rate of 133 MBps.)

PCI was commonly found in computers manufactured between 1995 and 2005, and many third parties relied on PCI buses to leverage the Plug n Play (PnP) feature of Windows 95 and early Apple Computers. PCI’s competitors at the time, Industry Standard Architecture (ISA) and VESA cards, were comparatively much slower and ultimately fell into obsolescence.

PCI was eventually superseded by PCI Express (PCIe) and (more prevalently) USB technology. PCI eXtended (PCI-X) is an adaptation of PCI that’s still in use today for some servers and workstations.

PCI is also an abbreviation for the Payment Card Industry. In this context, PCI refers to the development, management, education, and awareness of regulations related to credit and debit cards. The PCI Security Standards Council (PCI SSC) is the governing organization that has published and enforced the PCI Data Security Standards (PCI-DSS) since 2006. Members of the PCI SSC include Visa, Mastercard, American Express, Discover, and JCB.

Vangie Beal
Vangie Beal is a freelance business and technology writer covering Internet technologies and online business since the late '90s.

Top Articles

The Complete List of 1500+ Common Text Abbreviations & Acronyms

From A3 to ZZZ we list 1,559 SMS, online chat, and text abbreviations to help you translate and understand today's texting lingo. Includes Top...

Windows Operating System History & Versions

The Windows operating system (Windows OS) refers to a family of operating systems developed by Microsoft Corporation. We look at the history of Windows...

How to Create a Website Shortcut on Your Desktop

Website Shortcut on Your Desktop reviewed by Web Webster   This Webopedia guide will show you how to create a website shortcut on your desktop using...

Generations of Computers (1st to 5th)

Reviewed by Web Webster Learn about each of the 5 generations of computers and major technology developments that have led to the computing devices that...

Podcast

A podcast is an episodic form of digital audio content that...

Upwork

Upwork is one the most popular and biggest online platforms for clients and...

Headless CMS

A headless content management system (CMS) is a type of back-end content management...