Webopedia on Google+Webopedia on TwitterWebopedia on FacebookTech Bytes Blog
Main » TERM » P »

PCMCIA

Short for Personal Computer Memory Card International Association, and pronounced as separate letters, PCMCIA is an organization consisting of some 500 companies that has developed a standard for small, credit card-sized devices, called PC Cards. Originally designed for adding memory to portable computers, the PCMCIA standard has been expanded several times and is now suitable for many types of devices. There are in fact three types of PCMCIA cards. All three have the same rectangular size (85.6 by 54 millimeters), but different widths

  • Type I cards can be up to 3.3 mm thick, and are used primarily for adding additional ROM or RAM to a computer.
    • Type II cards can be up to 5.5 mm thick. These cards are often used for modem and fax modem cards.
  • Type III cards can be up to 10.5 mm thick, which is sufficiently large for portable disk drives.
  • As with the cards, PCMCIA slots also come in three sizes:

  • A Type I slot can hold one Type I card
    • A Type II slot can hold one Type II card or one Type I card
  • A Type III slot can hold one Type III card or any combination of two Type I or II cards.
  • In general, you can exchange PC Cards on the fly, without rebooting your computer. For example, you can slip in a fax modem card when you want to send a faxand then, when you're done, replace the fax modem card with a memory card.







    TECH RESOURCES FROM OUR PARTNERS
    LATEST ARTICLES
    Slideshow: 5 Hot Holiday Gifts for Tech Enthusiasts

    From cute electronic toys to VR gaming, here are 5 hot gifts to give to your special tech enthusiast this holiday season. Read More »

    What's Hot in Tech: AI Tops the List

    Like everything in technology, AI touches on so many other trends, like self-driving cars and automation, and Big Data and the Internet of Things... Read More »

    DevOp's Role in Application Security

    As organizations rush to release new applications, security appears to be getting short shrift. DevSecOps is a new approach that holds promise. Read More »

    STUDY GUIDES
    Java Basics, Part 1

    Java is a high-level programming language. This guide describes the basics of Java, providing an overview of syntax, variables, data types and... Read More »

    Java Basics, Part 2

    This second Study Guide describes the basics of Java, providing an overview of operators, modifiers and control Structures. Read More »

    The 7 Layers of the OSI Model

    The Open System Interconnection (OSI) model defines a networking framework to implement protocols in seven layers. Use this handy guide to compare... Read More »