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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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PC KEYBOARD WIRING SCHEMATIC
I am trying to wire and old 1920's typewriter to a modern PS/2
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 online, all i keep getting is PS/2 pinouts, or the pinouts for the IC. thanks in advance, -Rich |
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PC KEYBOARD WIRING SCHEMATIC
schreef in bericht ... I am trying to wire and old 1920's typewriter to a modern PS/2 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 online, all i keep getting is PS/2 pinouts, or the pinouts for the IC. thanks in advance, -Rich Rich, The keyboard interface to the PC has been defined. The inner workings of the keyboard is up to the manufacturer. Most of the old keyboards I opened contained an Intel 8048 micro with a 6MHz Xtal and some small amount of other electronics. Keyswitches are usually placed in some matrix. Best thing you can do is find an old AT-keyboard and wire the switches on your typewriter according to the matrix. Then take over the keyboard electronics as a whole. petrus --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.547 / Virus Database: 340 - Release Date: 2-12-2003 |
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PC KEYBOARD WIRING SCHEMATIC
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