On Sun, 23 Jul 2000 12:17:00 -0400, you wrote:

>At 11:05 AM 7/23/00 +0200, you wrote:
>>Fredrik Selin wrote:
>
>
>>Use pin 8 as a counter pulse to drive a ring counter such as a 4017 (I
>>think). The output from the counter drives the common of each segment.
>>Each counter pulse will switch on the next output, output 5 will reset
>>counter back to one.
>
>This works if you reliably reset the ring counter and never, ever lose
>synch between the external counter and it's shadow counter inside the =
PIC.
>
>A better way might be to feed short pulses to the clock input, and RC
>filter the clock ouptut to a RESET input on the counter. That way
>a short pulse will clock the counter and a longer one will reset it.
How about a 4-bit shift register, clocked from the 8th pin. Data could
come from one of the segment lines.=20
..or you could use a 4-bit latch, again taking data from the segment
lines and clocking from the 8th pin.=20
In the Microchip app notes there's an app driving two 7-seg displays,
a buzzer and a couple of buttons from a 12C508!

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.