Author: Andrew Liszewski – Gizmodo

Today calculators can do everything from plot complex equations to even play games like Doom (if you have enough rotting potatoes) but the handheld calculator started out as a very simple device capable of performing just four basic mathematical calculations. One of the very first prototypes, created by Texas Instruments back in the mid-’60s, is going up for auction, and is one of the rare times when buying a physical calculator — not an app — makes sense.

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