Check out the Sept 95 issue of Popular Electronics.  Terry Weeder of
Weeder technologies has done an article and sells such a unit cheaply,
kit form.  He has
interfaced a PIC to a serial EEprom and an lcd display with scrollback
buffers.  This issue is within the last year.  He used a 4 bit binary
output DTMF chip, but his code can be modified for your 2 of 8 output
chip.  BTW, does the chip have a selector for 4 bit binary out or 2 of 8?

--------------------------------------------
( Dave Schmidt       DSchmidt Technologies )
( dschmidt@rain.org     Ventura, CA        )
( Own an FME? ->finger dschmidt@rain.org   )
--------------------------------------------

On Tue, 7 Nov 1995 John.P.Hollingshead@HAPPY.FIRSTNETHOU.COM wrote:

> I'm looking for code, pinouts etc for LCD matrix displays.
>
> Also, I'm looking for some good sources for the displays.  What I
> have in mind, is for using a pic 16c57 for taking the 2of 8 binarie
> from a cd22202e dtmfdecode chip, and outputing to a serial e-prom and
> to output to the display.  It then must be able to access the eeprom
> to get readback buffers.
>
> Also, I'd like to find out how to use a pic to output to rs-232c and
> parrellel.
>
> any help would be appreciated.
>
>
> John P. Hollinghsead ]I[  KB5SXH
> President Texas Data Systems
> Pearland, TX
> avdeal@hollingshead.com
> (713) 485-0394
> Fax: (713) 485-8223
>