i'm having a project and it uses LCD and keypad Interface. My problem is I do not know how the data inputted in the keypad will be outputted to the LCD Display.how can it be transmitted to the other device with LCD and Keypad interface too? thanks a lot
"key pad will send serial(ASCI)data" How do you know that? Maybe it's just a matrix keypad? "from the LCD side u need a controller to receive it and process it for display on lcd" There is no problem getting the same 8051 to handle both the keypad input interface, and the LCD output interface.