Matrix Key Board and Four 7 Seg. Display.

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Please give me example code for 4X4 matrix scanning. Please give me code for 8051. Also give comments as how the code perform the action. And also suggest me code for FOUR 7 segment display scanning using common anode type. This one is also for 8051. Please suggest me codes.
 

hi
i have made this function ( scan 4x4 key matrix) and it works well.
you will find the function code using keil and the schematic
hope that help u
feel free to ask me any question.
salam
Ahmed
www.i-g.org
 

Thanks for the help but you have not given code for four 7 segment display multiplexing.
 

Code Warrior said:
Thanks for the help but you have not given code for four 7 segment display multiplexing.
Click to expand...

NO NEED TO THANK ME
i am working in this code, when finishing it i'll upload it here, i hope to do this soon

have a nice day
Ahmed
www.i-g.org
 

what program are you using to compile this?
I am no good with C, do you have the version in asm?

OR even the hex file?

Thank you
 

running 4 seven segment diaplay isn't a difficult job, just use multiplexing. send value of units digit and set the bit connected to this bit's anode, then send value of tens digit and set the bit connected to this bit's anode but clr the unit's segment bit....carry on like this for all 4 digits.

Regards
 

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