Hi

(You came close and beat me to the punch with this, I was slow to get my
msg out. DINNER CALL HERE in the Eastern Part of the States....
See my other msg I sent....)

Guys you can't have the SWITCH to the Supply, and the LED to GND.

Make it to GND and it with SHORT the LED and you'll not have to
worry about it coming ON during a Key Press.....

The TRICK is what the INPUT sees as a HIGH LOGIC Level...
In the DC Spec it is 2 Volts for a TTL Buffer INPUT.....

Dan Marchesani


>               LED   R1   diode(s)
>            +--|>|--/\/\--|>|----o GND
> -----+     |
>  I/O |     |
>  Pin +-----+
>      |     |          \
> -----+     |           \
>            +--/\/\--+   +--o 5V
>                R2    SW1

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