Olin Lathrop wrote:
>> What's the easiest way to write a PC application, which gives acces
>> the PC's interfaces?
>
> This used to be RS-232.  That is still easy to get working, but nowadays you
> can't count on the user's PC having serial ports.  Pretty much no recent
> laptops have serial ports.

My PC motherboard Asus P5Q (new P45 chipset) has one RS-232.

"Pretty much (no recent) laptops have serial ports" is equivalent to
"Pretty much old laptops have serial ports". That's good news about
old laptops. And why should that mean one can't count on the user's PC
having serial ports.

If not RS-232 why not count on IRDA instead. From PC side IRDA looks
like the same COM port, I beleive. From PIC side simply add some MCHP
IRDA IC.
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