If you're talking about your basic $10 calculator, I don't think it's possible. Most of those have been one-chip affairs for a long time now, i.e. when you open up the calculator all you'll see is a chip (usually a chip under a "blob"), the display, the keyboard and whatever the power supply is. That leaves no room for "modding" the werx to control individual LCD digit segments, etc.
You'd have to design your own chip to do what you wanted. You could either just have it play your game(s), or you could even have it function as a calculator AND play your games.
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Calculator fun
in atari2600land's Blog
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If you're talking about your basic $10 calculator, I don't think it's possible. Most of those have been one-chip affairs for a long time now, i.e. when you open up the calculator all you'll see is a chip (usually a chip under a "blob"), the display, the keyboard and whatever the power supply is. That leaves no room for "modding" the werx to control individual LCD digit segments, etc.
You'd have to design your own chip to do what you wanted. You could either just have it play your game(s), or you could even have it function as a calculator AND play your games.
-tet