Trying to make a calculator

[!Vlad!]

I want to make a calculator with a 4X4 keypad, a 16X1 LCD display using the PIC 16F628. I have not used multiplexing neither at the keypad nor at the LCD. Can anyone tell me how to program it (write the assembly code) or send me the assembly code or something else like a flow chart. :?:
If there is anyone who has made a similar project please help me so that I can finish it.
Thanks a lot.

 

[Nigel Goodwin]

I want to make a calculator with a 4X4 keypad, a 16X1 LCD display using the PIC 16F628. I have not used multiplexing neither at the keypad nor at the LCD. Can anyone tell me how to program it (write the assembly code) or send me the assembly code or something else like a flow chart. :?:
If there is anyone who has made a similar project please help me so that I can finish it.
Thanks a lot.

Consult my tutorials for keypad and LCD interfacing!.

 

[checkmate]

www.piclist.org provides a whole range of mathematical functions for you too.