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t4kUy4

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anyone can help me to control tthis circuit?
**broken link removed**

i cant send data to data port (D2-D9). i try to send 1-255 to port data, but nothing happend.
help me...

thx b4
 
May be posting a clear and reasonable sized schematic rather a tiny fussy one that no one can read will encourage more people to reply.
 
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