Chris Espinosa tries to build a Steve Jobs-approved calculator.

Original text from <a href="https://www.folklore.org/StoryView.py?project=Macintosh&story=Calculator_Construction_Set.txt">folklore.org</a>.

My favourite classic MacOS calculator was <a href="https://macintoshgarden.org/apps/calcworks-se-178">ProCalc</a>. While trying to find ProCalc, I found <a href="https://www.applefritter.com/node/16292">PowerCalc by John Mauro</a> who went on to <a href="https://www.matse.psu.edu/directory/john-mauro">co-invent Gorilla Glass</a>, used in every iPhone and iPad.

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.

Chris Espinosa tries to build a Steve Jobs-approved calculator.

Original text from <a href="https://www.folklore.org/StoryView.py?project=Macintosh&amp;story=Calculator_Construction_Set.txt" rel="noopener noreferrer">folklore.org</a>.

My favourite classic MacOS calculator was <a href="https://macintoshgarden.org/apps/calcworks-se-178" rel="noopener noreferrer">ProCalc</a>. While trying to find ProCalc, I found <a href="https://www.applefritter.com/node/16292" rel="noopener noreferrer">PowerCalc by John Mauro</a> who went on to <a href="https://www.matse.psu.edu/directory/john-mauro" rel="noopener noreferrer">co-invent Gorilla Glass</a>, used in every iPhone and iPad.

folklore.org: Calculator Construction Set (1982)

Comfort food for Macintosh users of the 1980s, 1990s, and 2000s.

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folklore.org: Calculator Construction Set (1982)

folklore.org: Calculator Construction Set (1982)