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7 segment display with 7447 led decoder(HELP)

MrChips

MrChips

Joined Oct 2, 2009
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So you have a common cathode display.
You cannot use a 7447 display driver with common cathode display.
Either change to a common anode display or replace the 7447 with 7448 or CD4511 or 74HC4511.
 
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