Hi.
I plan to attempt to make a spedometer type thing.
It's input is from a hall switch, which is passed by a magnet once per turn
of the wheel.  I need a unit to take this sensory input and display the
speed on an LCD display.
I was thinking that the prog would revolve around...
        wait for a pulse
        time until next pulse
        divide the distance round the wheel by the time between the two pulses
        display it...

I was planning on using a pic16C84 as it is easy (and cheap) to program.  I
have very little experience with PICs, my main use of assembler based on
6502.

I was wondering if in the 16c84 there is a timer capable of this task, and
how i would use it (preferably in mpasm).

Thanks,
        Daniel.