16x2 AlphaNumeric LCD, Keypad and PIC16F877a

[eebhoi01]

Hello everyone!

I am currently working on a project about a simple security lock. I wish to display the numbers that I press on the LCD same as we input our security code in our cellphones, atm etc. I know how to do it but not consecutively, I mean when I press a number it displays it in the LCD but when I press the next number it overwrites the previous one.


I have included my schematic XD.


Please help me ^_^ thanks in advance.


Regards

 

[eebhoi01]

Maybe you need code like key-in password here.

Thank you sir, it is likely the one I need. Im going to try this out. Thank you so much!