<x-flowed>>Can you tell us how the input circuit's set up?  (I'm suspecting
>something like no pull-up resistor, do you have a resistor pull-up to
>Vcc then the switch to ground or something?)  If that resistor's not
>there, you get "unexpected" results (I think I just haven't remembered your
>circuit from earlier   Mark

THANK YOU MARK!
   I didn't put any resistor btw Vcc and input switch at the first time,
after you told me, i tried. here was how i wired the input switch.  GND-->
Push button switch-->RTCC pin(#1)
   Second Time:
         GND--> Push button switch ==> RTCC/22kohm -->Vcc(+5V)

Result is: still the same.... :( , it doesn't count, and only count when my
finger touches the lead(RTCC). I also found, when i hold the lead(RTCC input
wire) it counted so fast and the light so dim almost couldn't see from the
7-Segment LED, and i didn't push the input button only hold the lead(RTCC).
        Is there anything wrong, can anyone tell me where i did wrong at the
input circuit. Thank You Very Much!!!

Tools i am using: PIC-ICE for PIC 16XX


>Scott wrote:
> >
> >     You might try to decouple the circuit.  Use a .1uF cap evey 2'' in
>both directions on the board.

Dear Scott, I am using a breadboard for the wiring, can u help me how to
decouple the circuit and both directions, and i am not kinda lost here.
Thank You for your help!!!

  Also a finger touch or probe touch to a circuit causes
> > a response by the circuit because you or the probe are close to ground
>and when
> > the circuit is touched the current and voltage values can change.  Try
>the
> > decoupling and simulate the code on MPLAB.
> >
> > Scott
> >
> > hanjay chen wrote:
> >
> > > All,
> > >     i am doing an experiment, using RTCC as an input counter from a
>push
> > > button, and output to a 7-segment LED. the problem is when i push the
>input
> > > button, i can't see any increment from the display. but it does
>increase the
> > > count when everytime my finger touch the input pin or wire, or pull
>out the
> > > input wire and insert back to the board and push the button. i have no
>idea
> > > what happened to this, anyone can help me, thank you!
> > >      for the "option" function i set it as "3Fh", ic=pic16x55, Xtal=8
>MHz.

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