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2. Friden, Inc. - Wikipedia

   en.wikipedia.org/wiki/Friden,_Inc.

   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 ...

3. HP 9800 series - Wikipedia

   en.wikipedia.org/wiki/HP_9800_series

   HP 9805A, the least expensive model using the same chassis as the HP46 (scientific) and HP81 (business) pocket calculators. This was a Programmable Calculator and had plug-in personality modules. It was introduced in 1973. [7] HP 9815A/S, the HP 9815A was HP's third generation high end RPN desktop and was introduced in 1975. [8]

4. Sharp EL-8 - Wikipedia

   en.wikipedia.org/wiki/Sharp_EL-8

   The EL-8 was much smaller, small enough to be used in one's hand: 164 mm (6.46 in) long, 102 mm (4.02 in) wide, and 70 mm (2.76 in) thick, and weighing 0.72 kg (1.59 lb) with batteries. [6] Although it was still too bulky to easily fit in a pocket, [ 1 ] it was an important step toward the development of the pocket calculator.

5. Monroe Systems for Business - Wikipedia

   en.wikipedia.org/wiki/Monroe_Systems_for_Business

   Monroe Systems for Business is a provider of electric calculators, printers, and office accessories such as paper shredders to business clients. [1] Originally known as the Monroe Calculating Machine Company, it was founded in 1912 by Jay Randolph Monroe as a maker of adding machines and calculators based on a machine designed by Frank Stephen Baldwin.

6. List of Hewlett-Packard products - Wikipedia

   en.wikipedia.org/wiki/List_of_Hewlett-Packard...

   Toggle Desktop calculators and computers subsection. ... Office black and white laser printers. ... LaserJet 2200 Printer series;

7. Calculator - Wikipedia

   en.wikipedia.org/wiki/Calculator

   The tube technology of the ANITA was superseded in June 1963 by the U.S. manufactured Friden EC-130, which had an all-transistor design, a stack of four 13-digit numbers displayed on a 5-inch (13 cm) cathode-ray tube (CRT), and introduced Reverse Polish Notation (RPN) to the calculator market for a price of $2200, which was about three times ...