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Geek Culture / Calculator IC's

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Dark Java Dude 64
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Posted: 15th Apr 2011 06:01 Edited at: 15th Apr 2011 07:12
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So i was wondering: do most pocket calculators (not scientific or graphing) use a chip that has a simple OS with calculator functions stored on a ROM, or is the chip just fixed function where the functionality is essentially 'hard wired' into the chip?

Also, i read somewhere that almost all pocket calculators use exactly the same IC. I researched what it was but couldnt find any answers, does anyone know? I suspect not...

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IanM
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Posted: 15th Apr 2011 16:22 Edited at: 15th Apr 2011 16:23
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Basic pocket calculators are generally hard-wired - (Example chips)

It's only the higher-end scientific calculators that have more general processors and those barely qualify for having an OS, in the same way that the old 8-bit computers have an OS (ie, a basic IO system with an interpreter laid on top).

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Dark Java Dude 64
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Posted: 16th Apr 2011 00:41 Edited at: 16th Apr 2011 00:45
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Haha YOU ARE AWESOME for that link! I have always wondered what they use! So those look like actual chips with IC's on them. Are the same chips used on the PCB's with that black dot of epoxy covering the chip?

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