Recent content by Stima

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PS/2 Standard Keyboard Electrical Operating voltage: + 5VDC ± 5% Power consumption: 50-mA maximum (with three LEDs ON) System interface: PS/2 6-pin mini din connector ESD: CE level 4, 15-kV air discharge

I have already selected the keyboard and done some testing to clarify the binaries for the 12 keys using the digital osciloscope.

I would like some help with this. My project is to interface the computer keyboard to the at89c2051 microcontroller(or any other MC) in order to capture 12 different key strokes from the user which then activates 12 separate telephone lines. I am using chiplab to program the MC, but I would like...