Mountain View, California, USA: Computer History Museum. Unfortunately, it has a seriously wasted electrolytic can cap. Upon getting it home, as with old radios and TV's, I did my usual take the covers off for a look see before dim bulb power on. I believe this unit was made in 1968 or 9. ^ "Friden EC-132 Electronic Calculator". I just picked one of these up at an estate sale I stopped into.^ "Friden EC-130 Electronic Calculator".
He is responsible for the development of the first commercial electronic calculator, the Friden 130, which has been displayed at the Smithsonian. Bob holds over 80 patents awarded during his work as Director of RD for Friden, and Singer and as Senior Project Engineer at Xerox. ^ "1928–2012 Obituary Condolences Robert (Bob) Ragen".The Singer – Friden Research Center in Oakland, California, later moved to Palo Alto, California (1965 to 1970), was unable to develop a pocket-sized calculator to compete with the corresponding new Japanese products, such as the Busicom, based on Intel 4004 in 1971, Casio Mini and Sharp EL-805 in 1972. In 1965 the company was purchased by the Singer Corporation, but continued operation under the Friden brand name until 1974. The successor model EC-132, introduced in April 1965, added a square root function. It was the first calculator to use reverse Polish notation (RPN), which eliminated the need for parentheses to specify the order of operations in complex calculations. The EC-130 sold for $2,200 (equivalent to $18,600 in 2020), or about three times the price of comparable electromechanical calculators of the time. It used a magnetostrictive delay-line memory, to save money on expensive transistors. This machine had a 13-digit capacity and a 5-inch CRT display. Friden eventually expanded into production of a few models of early transistorized computers.įriden introduced the first fully transistorized desktop electronic calculator, the model EC-130 in June 1963, designed by Robert "Bob" Appleby Ragen. The Flexowriter could be attached to Friden calculators and driven by paper tape to produce bills and other form letters which had names of customers and amounts of bills filled in automatically. 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, the predecessor to modern computers. In 1957, Friden purchased the Commercial Controls Corporation of Rochester, New York.
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