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The Sovereign was one of the last calculators produced during Sinclair's foray into the calculator market that had started with the Sinclair Executive in September 1972. [1] The Executive had retailed for £80 when introduced, but in little over a year it was possible to purchase a Sinclair calculator for £20 and by November 1976 a model was ...
A partially disassembled Curta calculator, showing the digit slides and the stepped drum behind them Curta Type I calculator, top view Curta Type I calculator, bottom view. The Curta is a hand-held mechanical calculator designed by Curt Herzstark. [1] It is known for its extremely compact design: a small cylinder that fits in the palm of the hand.
Friden Calculator Friden Flexowriter. In 1957, Friden purchased the Commercial Controls Corporation of Rochester, New York.This gave them the Flexowriter teleprinter, an electric typewriter capable of being used as part of unit record equipment developed in World War II for the Department of the Navy to automatically type "regret to inform you" letters to the survivors of fallen servicemen ...
Vero was founded in Northern Italy in October 1988 by Don Babbs and Ezio Galardo when they left Olivetti.In the mid 1990s, its VISI-CAD and VISI-CAM products were the first to use the PC implementation of the Parasolid kernel.
A pinwheel calculator is a class of mechanical calculator described as early as 1685, and popular in the 19th and 20th century, calculating via wheels whose number of teeth were adjustable. These wheels, also called pinwheels, could be set by using a side lever which could expose anywhere from 0 to 9 teeth, and therefore when coupled to a ...
The template supports inflation calculation, by way of {{}}.If the second parameter is used, to specify a year, and this year is within a certain range of available inflation data (specifically, if 1899 ≤ year < 2021), the equivalent value represented in 2021 pesos will be calculated in parentheses.
The product was named Otis King's Patent Calculator, and was manufactured and sold by Carbic Ltd. in London from about 1922 to about 1972. With a log-scale decade length of 66 inches, the Otis King calculator should be about a full digit more accurate than a 6-inch pocket slide rule.
The HP 35s (F2215A) is a Hewlett-Packard non-graphing programmable scientific calculator. Although it is a successor to the HP 33s, it was introduced to commemorate the 35th anniversary of the HP-35, Hewlett-Packard's first pocket calculator (and the world's first pocket scientific calculator). HP also released a limited production anniversary ...