8051 C keypad code without interrupts and without using port 3

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0killingsoul0

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I urgently need keypad code in c for 8051 without using interrupts and not using port 3 because all of my interrupts are used. Actually i would have loved to write the whole code by myself but currently i have tons of other code to write and all the code on forums is using interrupts or port 3. Thanks in advance.
 

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