PC KEYBOARD WIRING SCHEMATIC | Electronics Forums connection, AT computer keyboard. I plan to basically remove the control IC from an old keyboard, and wire each keyswitch connection to a momentary button, which is hooked to mechanical levers in the typewriter. Does anyone have a wiring diagram of the internal keyswitches in a standard PC keyboard. I havent been able to fiond one Computer Connection Diagram - how-to-wire-it These type connectors are for your keyboard and mouse connections. They are typically color coded so they are not inserted into the wrong ports on the computer. The PS/2 ports on the computer are identical to one another so be sure to match up to the proper color codes. The keyboard port is purple and the mouse or other pointer device is green. How to make a keyboard – the matrix | komar's techblog Remember though that there's a difference between NKRO of the keyboard matrix and NKRO of the very keyboard. Whereas just the matrix implementation I showed in this article always supports NKRO with correctly written firmware, this is not necessarily the case for the keyboard which uses such a matrix. Computer Keyboard Layout – Understanding the Keyboard To check whether your keyboard is a QWERTY keyboard, just take a look a the first six keys on the top left. If they spell QWERTY then your keyboard is the typical computer keyboard. Computer Keyboard Diagram. The following diagram is the same as the one above, except that this one is Computer Wiring: How to Connect Your Computer Wires Take note of the connection to the left of the all the computer wiring connections. This is the USB connection from the computer case. This is where you will plug in any external USB ports, like the ones on the front of your computer case, or a USB bracket, as shown further down.