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The ultimate piece of retro-computing

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The Graphoplex slide rule I used in physics classes in France in the 1960's (and which I still have, although I haven't used it in decades) had a magnification attachment that allowed you to interpolate an extra digit of precision, as well as scales for squares, cubes, natural logs, trigonometric functions and more.
-xtabber (February 16, 2009, 08:53 AM)
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Same as the K&E I inherited from my father, which I also haven't used in decades. ;D

I've also have a circular slide rule he gave me, which got a lot of use when I first went to college.

It was soon replaced by a Texas Instruments SR-10 "slide rule" calculator. It cost about $150 dollars at the time, which would translate out to about 600 of today's dollars. I loved it because it had a square root key and I was taking statistics when I got it.

Unfortunately, I pretty much forgot how to efficiently calculate square roots manually after that. ;D

Hey 40hz, check out these babies.
Good to know my soft spot for old tech is not alone...  :Thmbsup:

You may laugh at your granddad all you want , but consider the availability of calculating devices to general public, or students: log tables (if you know what they are), slide rules, mechanical calculators known as Comptometers, twice the size of a typewriter and generally available in businesses only, first electric calculators desk models only, then pocket calculators, then home computers such as Commodore 64.

I bought my first electronic computer at K-mart around 1971, when they firs became available to general public. It was the size of external DVD recorder, cost me $129 and lasted about 18 months.

Hey 40hz, check out these babies.
Good to know my soft spot for old tech is not alone...  :Thmbsup:
-Edvard (February 16, 2009, 07:16 PM)
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Thank you thank you thank you!

What an awesome link. 8)


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