The Comptometer was the first commercially successful key-driven mechanical calculator, patented in the United States by Dorr Felt in 1887. A key-driven...

industrial production of the more successful Odhner Arithmometer in 1890. The comptometer, introduced in 1887, was the first machine to use a keyboard that consisted...

Florida Tech Easy Instructions for Operation the Controlled Key Comptometer, Comptometer Division, Felt and Tarrant Mfg. Co., Chicago, 1917, p. 12 Carl...

not gain widespread use until Dorr E. Felt started manufacturing his comptometer (1887) and Burroughs started the commercialization of differently conceived...

the only other competitor in true commercial production, had sold 100 comptometers. It wasn't until 1902 that the familiar push-button user interface was...

built by the Bell Punch Co. in Britain, and marketed through its Sumlock Comptometer division, they used vacuum tubes and cold-cathode switching tubes in...

the Comptometer Corporation, which produced calculating machines and a telecommunication device called the Electrowriter. In 1965 Victor Comptometer Corporation...

American inventor and industrialist who was known for having invented the Comptometer, an early computing device, and the Comptograph, the first printing adding...

entrepreneur, mathematician and computing pioneer. During World War I she was a comptometer operator in a munitions factory during which time she realised the potential...

"smaller than a typewriter". The original prototype was built by Victor Comptometer using vacuum tubes in 1963. When this was successful, the company sought...

larger facilities in Dyersville, Iowa 1967 - Ertl is acquired by Victor Comptometer Corporation 1971 - Ertl acquires Carter Tru-Scale 1973 - Ertl begins...

most-produced mechanical calculator in the world, by 1900 four machines, the comptometer and Burroughs' adding machine in the USA, Odhner's Arithmometer in Russia...

fiberglass and other modern materials. Fred Bear sold the company to Victor Comptometer in 1968, but remained the president of Bear Archery. The company was...

early electronic desktop calculators, including the first: the Sumlock-Comptometer ANITA Mk VII of 1961 and even the first electronic telephone switchboards...

designs were completed in Babbage's lifetime. The Arithmometer and the Comptometer are mechanical computers that are precursors to modern digital computers...

Otherwise, pressing a 5..9 key would require either a longer stroke (as in a Comptometer) or excessive force combined with a gently sloping cam surface. – Curt...

and AFL football defensive back Dorr Felt (1862–1930), inventor of the Comptometer, an early computing device Edward P. Felt (1959–2001), a victim of the...

That same year, the company entered an agreement to convert a Victor Comptometer tube-based electronic calculator to all-IC form, the Victor 3900, with...

the Tesla Model 3 Honda e, an electric car by Honda Comptometer Model E, a version of the Comptometer mechanical calculator Vickers Model E machine gun...

In 1961, Cass Hough, the president of Daisy Heddon division of Victor Comptometer, purchased the design of a new firearm system. The new system was developed...

23 custom integrated circuits for an electronic calculator for Victor Comptometer proved to be too ambitious given the reliability of PMOS circuits at...

to help support her family. She lost her first job (as a typist and comptometer operator) after taking her guitar to work and playing it during tea-breaks...

dramatically modernized computing. Earlier key driven adding machines, like the comptometer, featured eight or more columns of nine keys, which made them cumbersome...

Victor Technology, known earlier as Victor Adding Machine Co. and Victor Comptometer, an American calculator company Victor (sports company), a Taiwanese...

Edward A. Everett, Wisconsin State Representative Dorr Felt, inventor of comptometer Edwin G. Fifield, Wisconsin State Representative Lucius G. Fisher, state...

state park that is undergoing restoration. Built by the inventor of the comptometer in 1928, the Felt's summer home was sold to the St. Augustine Seminary...

era coat buttons; a collection of Montie Montana memorabilia; a 1915 comptometer; and a 2005 Suzuki GSX-R 1300 Hayabusa motorcycle. Upset over dwindling...

They would have eight children, including Dorr Felt, inventor of the comptometer. Felt was a member of the Assembly from 1872 to 1873. Additionally, he...

Belgium. Oldham's Australian-born mother, Celia Oldham, was a nurse and comptometer operator. Oldham attended the Aylesbury School for Boys, Cokethorpe School...

he became a business executive with Olin Corporation and later Victor Comptometer and then chair and principal owner of AquaVac Systems. He was president...