Computer Help Community

Community

Cyber Tech Help Community

New Tutorials

PC Tutorials

New Downloads

More Downloads
PC Downloads

Member Testimonials

Open Member Quote   Just wanted to say THANKS to everyone at CTH. A Presbyterian pastor taught me that one can never say thank you enough and that everyone needs to pass it on when you hear it. Over the past two weeks I have read so much great information (so many posts...so little time) and picked up considerable knowledge. THANK YOU ALL! - uncleable  Close Member Quote
Member Testimonials
MY CYBER TECH HELP

LATEST TOPICS

Tech Help Community

Free Antivirus Scan

Free Virus Scan and a listing of the top 10 viruses in the wild - Free Antivirus Scan
Free Online Antivirus Scan

File Extension Database

Find what program a filetype belongs to in our searchable File Extension Database.
File Extension Database

Related Microsoft Links

Services
Cyber Tech Help Community

To the top of the page to top

 



Tutorials | Types of PC keyboards

Publish date: 23:33 Thursday, 15th September 2005
Written by: Murf
Audience intended for: Hardware
Category: Computer Hardware

Go up a levelGo up a level

The 3 basic types of KeyboardsTypes of PC keyboards

  1. Older computer's (XT, AT, Baby AT and LPX) use what is called an AT keyboard. This board has a large AT connector that plugs into the motherboard, commonalty referred to as a DIN-5 (IBM-PC). It looks like this:

    AT Keyboard

    The pins are as follows:

    Pin Description
    1Clock
    2Data
    3Not connected (reset on some very old keyboards)
    4Ground
    5+5 VDC


  2. Newer keyboards use what is called an ATX keyboard. This board has either a USB or a PS/2 connector. The Ps/2 connector is smaller then the AT and communally referred to as PS2 (Mini-DIN-6). It looks like this:

    PS2 socket

    PS2 connection

    The pins are as follows:

    Pin Description
    1Data
    2N/C
    3GND
    4VCC (Power, +5 VDC)
    5CLK
    6N/C


    You can also get an adapter that will allow a PS/2 keyboard to plug into the old AT motherboard, it looks like this:

    AT to PS2 convertor

  3. And finally is the USB keyboard which has a standard USB plug on it:

    USB Cable

 

Please Note: if you have any questions about this tutorial please ask on our support forums
If you have written a tutorial of your own and would like to have it here on Cyber Tech Help all you have to do is Submit your tutorial and it will be reviewed by the Administrator.