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Chris Espinosa tries to build a Steve Jobs-approved calculator.
Original text from folklore.org.
My favourite classic MacOS calculator was ProCalc. While trying to find ProCalc, I found PowerCalc by John Mauro who went on to co-invent Gorilla Glass, used in every iPhone and iPad.
By Derek5
3131 ratings
Chris Espinosa tries to build a Steve Jobs-approved calculator.
Original text from folklore.org.
My favourite classic MacOS calculator was ProCalc. While trying to find ProCalc, I found PowerCalc by John Mauro who went on to co-invent Gorilla Glass, used in every iPhone and iPad.

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