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The calc that always gave PI as the result

Posted by Marcus von Cube, Germany on 9 Aug 2005, 11:07 a.m.

When I was 16 years old (back in 1975) scientific calculators were out of reach for me or my schoolmates. But I was lucky for one day...

A friend of mine got hold of an HP 35 and agreed to lend it to me for one day at school. How proud I was!

Next day, I attached the leather pouch with this precious gem to my belt and walked happily into the classroom. I asked my envious schoolmates to perform a simple calculation, e. g. 1+1. The result was always the same, 3.141592654....

In fact, RPN was the first calculator entry system I've ever used, but my schoolmates had never heard of it. They assumed there must be something like an [=] key in the bottom right corner of the keypad.

No look at the keypad of an HP 35:

I must admit that I switched to the (much more affordable) TI line of calculators in my later school and university career, the HPs were simply out of reach.

Edited: 9 Aug 2005, 11:13 a.m.


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