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Project: PIC16F84A 0-9999 counter

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profahmet

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profahmet

Joined Oct 14, 2008
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9999.jpg

- Button = 1 decrement
+ Button = 1 increment
RESET Button = zero display

displays = 7 segment, com cathode
PIC16F84 supply 5. pin GND, 14. pin dc +5 volt

.asm, .hex, proteus .DSN source files:
 

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raffter

Joined Feb 28, 2008
113
^^ I once had requested some time ago, a similar circuit like THIS one.. but instead I got FLAME replies :mad: :p

nice one profahmet ;)

I can guess your using a lookup table...

how about adding a laeding zeroes blanking...that would make your project neat :cool:
 
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LKS

Joined Nov 7, 2008
8
Dear Profahmet,

I put this circuit on the bread board to test it does not work. I measure the 1234 it is positive voltage out from the pic pin 17,18,1,2 instead of negative. As you said used the common cathode, is there a mistake. Please reply. Thanks
 
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