hello every body.
i am very happy to see your very nice forum with its great members. actually i am also reading it.
it is first time to ask.
i am an electrical engineering student and i need your help in my project.....i want to graduate.

my project (weight watcher digital scale).

i have (digital sclae, keypad, LCD, AT89s8252).

10 users... By the keypad, each user will enter his 4 digit password (for example #1234) and his height (for example 170 cm) then>>>> the LCD will show to him his current weight and the last weight in addition to giving that user some advices.

any way, i connected the circuit and also i wrote the code (in 8052 assembly) but i have two problem:

1- how can i get the user current weight from the ready digital scale and in which port ofd the AT89S8252.

2- i need from the LCD to show the last taken weight for the same user so i need to know how to store the weights (and also the passwords) in the external memory that provided inside the AT89S8252 to avoide lossing these data after turning off the devise.

please, i need you
at least at least key points

your friend ADEL