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Calculating Machine Crewneck Sweatshirts

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Adding Machine Patent Calculating Machine 1888 Crewneck Sweatshirt

Description: An awesome calculating machine patent from 1888

Tags: calculator patent, accounting, adding machine patent, accountant gift cpa, calculating machine 1888
Babbage's Difference Engine, Gears and the Finite Differences of n squared + n + 41 Crewneck Sweatshirt

Description: Rendered on a deep dark background, this artwork presents three columns of gears from Babbage's Difference Engine, holding the values of n² + n + 41 and their first and second differences, with the crank on the side. Charles Babbage designed the Difference Engine in 1822 to compute mathematical tables mechanically using the method of finite differences. His later Analytical Engine anticipated the modern computer. Made for developers, computer scientists and anyone who speaks the language of machines, it suits a home office, dev desk or study.

Tags: analytical engine, brass gears, calculating machine, charles babbage, computing pioneer

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