-----Original Message-----
From: Fredrik Selin <fredrik_selin@YAHOO.COM>


|Hi everyone!!

Hi Fredrik,

|I4m building a clock using four 7-segment LED displays and I4ve got only
PORTB
|(8 ports) aviable for the displays. Any ideas how to control the
displays???


Multiplex it; Use 4 port pins to output the actual number in BCD, and the
other 4 to enable one display at a time, through 4 BJT's driving each common
wire.
Also you'll need a BCD-to-7 segment decoder.

Best Regards,

S.-

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