Hacking a Casio calculator?

[Armored Cars]

Anyone here hacked a Casio or used any parts from one? ·I have an XF 74000G.· The keypad has about 50 keys but there are only about 20 wires leading out of the keypad.

[Newzed]

I think the Casio uses a keyboard matrix.·
Exactly how many·buttons do you have?

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Sid Weaver
Pluggable Serial Backpack

http://hometown.aol.com/newzed/index.html
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[Armored Cars]

54

[Newzed]

Then I would think there would be 15 wires coming from the keypad.

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Sid Weaver
TWS/RWS RF Modules

http://hometown.aol.com/newzed/index.html
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[Armored Cars]

Theres more than 15, I did manage to fry the calculator yesterday trying to read the signals from it, I got some readings on the first wire then I hit the second one and it died for good. I think it may be too much trouble I dont even know wich ones give power or anything.