-----Original Message-----
From: :-=jug=-: <juggernutz@YAHOO.COM>

|Hi to all!

Hi Juggernut,

|Is there anybody can explain me further the circuits description or
|operation to operate a 3 display multiplex 7 segment?

There are many ways to do it.
If You want minimal hardware, hang the 7 data lines of each display to 7
port pins of the micro, and consider 3 additional lines to control (through
BJT's) the displays common (anode or cathode). That's it. Then You can
multiplex by enabling one display at a time, with the correct data at the
current time. The data to send can be from a look-up table, containig the 7
segment codes.
Another way is using BCD to 7 segment decoders, and 4 lines of one port
containing the BCD data.

These are the most common ways to do it.

The multiplex can be achieved by using the timer interrupt, while You do
another tasks. I suggest You play a little with the timings, to avoid visual
flickering. Start with 3 ms. the display ON.

Best Regards,

S.-

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]: PIC only [EE]: engineering [OT]: off topic [AD]: advertisements