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These new surroundings hastened the development of an existing idea: an adding machine. His new job gave him the opportunity to build his prototype. Accuracy was the foundation of his work. He made his design drawings on metal plates to prevent distortion. Burroughs filed his first patent for the invention of a "calculating machine" in 1885. It ...
Standard Adding Machine Company was founded in the early 1890s (first records are from 1892) [2] [3] [4] in Illinois and was the first company to (successfully) [5] release a 10-key adding machine. The machine was a breakthrough for its time because it dramatically modernized computing.
The adding machine range began with the basic, hand-cranked Class 1 which was only capable of adding. [citation needed] [2] The design included some revolutionary features, foremost of which was the dashpot which governed the speed at which the operating lever could be pulled so allowing the mechanism to operate consistently correctly. [3]
Adding machine for the Australian pound c.1910, note the complement numbering, and the columns set up for shillings and pence. An adding machine is a class of mechanical calculator, usually specialized for bookkeeping calculations. In the United States, the earliest adding machines were usually built to read in dollars and cents.
This made it a simple adding machine, but thanks to its moving carriage used as an indexed accumulator, it still allowed for easy multiplication and division under operator control. The arithmometer was now adapted to the manufacturing capabilities of the time; Thomas could therefore manufacture consistently a sturdy and reliable machine. [62]
Unlike Burroughs, these competing machines had "visible" printers that printed in view of the operator. Pike, Universal, and Wales machines had full keyboards like the machines produced by Burroughs. By contrast, Dalton Adding Machine and the Standard Adding Machine Company had more modern ten-key keyboards. [6]
A comptometer is a mechanical or electro-mechanical adding machine. The comptometer was the first adding device to be driven solely by the action of pressing keys, which are arranged in an array of vertical and horizontal columns. Although the comptometer was designed primarily for adding, it could also do division, multiplication, and subtraction.
It was the first printing-adding machine design to use individualized type impression which made its printed output very legible. The first comptograph was sold to the Merchants & Manufacturers National Bank of Pittsburgh, PA. in December 1889. It was the first sale of a recording-adding machine ever. This machine is now on display at the ...
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