ĐOT-MǞTRIX Display Programming

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Eshal

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Hello experts!

I have this schematic attached below,


I have picked this circuit diagram from **broken link removed**

I want to glow just one LED on this display. 1st row and 1st column LED i.e the most upper leftward LED.

What code should I burn in the AT89C51 in Assembly Language to glow it?

Thank you very much.
 

Why not anyone help me? Does no one know about this?

Regards,
Princess
 

I do not know the AVR, but ... try this:

- write to the HC164 the value 0b10000000 (0x80, one 'one' and 7 'zero', using 8 clock pulses) and write 0b01111111 (0x7F) to the P0 port. But it depends on the matrix connections (polarity).
 
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    Eshal

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Yes you are right sir.

And let me know if you know how to generate two waves through the programming simultaneously? Using assembly language?
 

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