At 11:05 AM 11/10/2009, Vasile Surducan wrote:
>BTW,
>assuming you want to build it from scratch, how many IO pins will be
>necessary for a
>7 seg clock displaying:
>dd:mm:yyyy     hh:mm:ss:tt   totaly16 digit
>where the format displayed is day:month:year  hour:minute:second:milisecond
>
>Vasile

For me, this would use 3 or 4 i/o pins: clock, data1, data2, 
latch.  Those 4 i/o pins would also be used for 4 or 6 push-buttons 
as well.  Use another input pin for line frequency sample.

Milliseconds display wouldn't be updating at individual ms rate, though.

Code might fit into a 12f508, should fit into a 12f509 or 12f629.

But: that's me.

dwayne

-- 
Dwayne Reid   <dwayner@planet.eon.net>
Trinity Electronics Systems Ltd    Edmonton, AB, CANADA
(780) 489-3199 voice          (780) 487-6397 fax
www.trinity-electronics.com
Custom Electronics Design and Manufacturing

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