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All their circuitry was purpose-designed for the specific things the calculator did. That's why room light was enough to power them. Something more complicated
by mkr-hn 7y ago
All their circuitry was purpose-designed for the specific things the calculator did. That's why room light was enough to power them. Something more complicated would lose many of the benefits (tiny general purpose CPU) or be expensive and unreliable (big, complex circuits).
- NikkiA 7y agoModern microcontrollers can run on a fraction (uA range) of the power that those 80s credit card calculators ran on (mA range), and still have millions of times more powerful processing abilities.