thank you very much and i will try to solve (2).

but my problem (1)>>>!!

is it possible?
my idea is to get the output wires of the digital scale instead of its display. these wires contain the weight formation (like bits)....is it write?

if it is the correct way, and i have these digital wires containning the weight information (like 65 kg for examples but in bits) then how to read it from any 8252 port?

I am doing my best
and very thanks