I'm thinking about a project, but I have no idea if it's even possible... So the general idea would be to have a calculator that can display letters and other characters. I have a very basic calculator (Sharp Elsi Mate EL-376S) with a 7-segment LCD. Is it possible to read the values from the calculator's chip and write them to another LCD? (both read and write with an arduino or any micro controller) The "old" display would be detached. Letter/Character mode could be changeable by pressing a key on the calculator.
Please share any thoughts, tutorials, concepts I should read/know! Thanks, in advance!