Is it possible to read calculator LCD values?

Hi all,

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 "new" 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!

by leventecsoba
May 20, 2020

1 Answer

Answer by mrobbins

I think the answers provided to you here are sufficient.

I too would consider whether it's far easier to simply intercept the keypad and create your own calculator program, versus trying to intercept the LCd transmission. Good luck!

+2 votes
by mrobbins
May 20, 2020

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