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After doing some testing for a while, I think I found the problem:
if(strcmp(string, password)==0) // this line never true because

string[j]=k // ...

could any genius help me? Sad

Thank you very much sir:) I'm using 16F877. I looking forward for your next post sir, thank you so much

do u meant using interrupt? basically that is my plan but actually I don't really understand the function of interrupt. I'm very beginner in PIC and i learnt it by myself. I've search through net but ...

Hello all

I have some confusion here, let see i built a program to ON the LED within 10 seconds using delay_ms(10000). But can i stop it when it was executing without having to wait 10 seconds? It' ...

Dear forumers, can anyone help in checking my program? It's seems the LCD just shown "WRONG PASSWORD", although the password entered is correct (1234). Below is the coding:

#include<16 ...

You have series resistors in your circuit, not pull-ups. Also, it looks like
they are on the column pins, not the row pins.

1. Get rid of the series resistors.

2. Add pull-up resistors on ...

Sorry i forgot to include that. I've edited my post.thanks Smile

Hello everyone. Could anyone help me solving my 4x4 keypad problem please? I'm using portB for the 4x20 lcd and portC and D for the 4x4 keypad. I think all the connections are right, with the 10K pull ...