At 03:53 1998-01-28 -0800, you wrote:
>   Morgan, another option is to use a 74C922 keyboard encoder. While it's
>more expensive, it only requires two capacitors for debounce and scan
>frequency. It's trivial to interface to a PIC with 6 lines which includes
>a keypress strobe and an output-enable for bus applications. I've used it
>in many projects.
>
>   - Tom
Well, right, but this was about the opposite issue:
signalling from logic to keyboard!
Seem crazy, right?

We want to add to a already existing keyboard (PC in my case) the ability
for another circuit (IR reciever) to "press" some keys.

(This was quick one-piece production)

Also useful for a hobbyist to connect a PIC to a remote control transmitter
to control his VCR«s etc?

For mass production it shuuld of course be nicer to hang a PIC to add the
keystrokes on the connection between keyboard and PC.
/Morgan O.
Morgan Olsson, MORGANS REGLERTEKNIK, Sweden, ph: +46 (0)414 70741; fax 70331
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