You are in the: Small Business Computing Channelarrow View Sites +
Small Business Technology
» ECommerce-Guide | Small Business Computing | Webopedia | WinPlanet |  »Close
Enter a word for a definition... ...or choose a computer category.

   Term of the Day
   New Terms
   New Links
   Quick Reference
   Did You Know?
   Search Tool
   Tech Support
   Webopedia Jobs
   About Us
   Link to Us

talk to us
   Submit a URL
   Suggest a Term
   Report an Error
Internet Lists
Internet News
Internet Resources
Linux/Open Source
Small Business
Windows Technology
Wireless Internet
xSP Resources

Corporate Info
Tech Jobs
E-mail Offers
  Be a Commerce Partner

printed circuit board
Last modified: Wednesday, November 12, 2003 

printed circuit board
Sometimes abbreviated PCB, a thin plate on which chips and other electronic components are placed. Computers consist of one or more boards, often called cards or adapters. Circuit boards fall into the following categories:
  • motherboard : The principal board that has connectors for attaching devices to the bus. Typically, the mother board contains the CPU, memory, and basic controllers for the system. On PCs, the motherboard is often called the system board or mainboard.
  • expansion board : Any board that plugs into one of the computer's expansion slots. Expansion boards include controller boards, LAN cards, and video adapters.
  • Daughtercard : Any board that attaches directly to another board.
  • controller board: A special type of expansion board that contains a controller for a peripheral device. When you attach new devices, such as a disk drive or graphics monitor, to a computer, you often need to add a controller board.
  • Network Interface Card (NIC) : An expansion board that enables a PC to be connected to a local-area network (LAN).
  • video adapter: An expansion board that contains a controller for a graphics monitor.
  • Printed circuit boards are also called cards.

    E-mail this definition to a colleague

    Sponsored listings

    KeyTronicEMS: Printed Circuit Boards (PCBs) - Provides circuit board assembly services for electronic components, with SMT and PTH, BGA, micro BGA, and fine pitch.

    PCBexpress: Prototype Circuit Boards (PCBs) - Provides Internet-based prototype circuit boards. Offers 2, 4 and 6-layers, up to 20 pieces, including double sided, multi-layer commercial boards.

    PCBpro: Printed Circuit Boards (PCBs) - Offers Internet-based quoting and ordering for up to 8-layer PCB prototypes and production. Geared toward production with online quote engine.

    For pages about printed circuit board . Also check out the following links!

    Related Links

    PCB Design Conference Information
    Provides details on upcoming PCB Design conferences.

    Printed circuit board fabricators home page
    The Printed Circuit Board Fabricators home page, sponsored by RD Chemical, offers advice and insights on the process for producing a printed circuit board. Each fabrication process is described in great detail. In addition, this site offers a question and answer section, as well as links to related Web sites.

    Sponsored listings

    Sierra Proto Express: Printed Circuit Boards (PCBs) - Offers PCB's from 2-24 layers with same day to 5 day delivery time.

    PCB123: Printed Circuit Boards (PCBs) - Offers the complete PCB solution, from design to order. Provides free design software that quotes board designs from within and quick order process.

    Hughes Circuits: Printed Circuit Boards - Prototype PCB fabricator with extensive experience with controlled impedance, buried resistors, microvias, and high density interconnects. Search for Printed Circuit Board Suppliers - Huge selection of printed circuit boards at, a comprehensive industrial resource. Search by product/service, location or company. Printed Circuit Boards - Provides database of suppliers for printed circuit boards. Includes catalogs, technical information, and supplier contact information.

    related categories



    related terms






    expansion board

    expansion slot




    form factor

    local-area network



    server blade


    video adapter

    Give Us Your

    Printer Accessories
    printed_circuit_board Products

    Shop by Top Models:
    OTC BOARD MAIN LOGIC Printed Circuit Board (0460006101)
    5 store offers from $210 - $620

    Zebra (45762M) Printed Circuit Board
    1 store offers from $363 - $363

    Hewlett Packard NEW FORMATTER PCA (EXCHANGE) (HP NEW) HP - Item Printed Circuit Board (c422769002)
    1 store offers from $306 - $306

    Hewlett Packard Refurbished FORMATTER PCA FOR CHP LASERJET 8550N/8550DN(EXCHANGE) (HP REFURB) HP - Item Printed Circuit Board (c709669005)
    1 store offers from $372 - $372

    JupiterWeb networks:


    Search JupiterWeb:

    Jupitermedia Corporation has four divisions:
    JupiterWeb, JupiterResearch, JupiterEvents and JupiterImages

    Copyright 2004 Jupitermedia Corporation All Rights Reserved.
    Legal Notices, Licensing, Reprints, & Permissions, Privacy Policy.

    Jupitermedia Corporate Info | Newsletters | Tech Jobs | E-mail Offers