The EC-132 model was introduced in 1965 and additionally has the square-root function. The Friden EC-130, introduced in 1964, is a contender (together with the IME 84 and the Sharp CS10A) for the accolade of the first all-transistorised desktop calculator. Technology - 8 boards with individual transistors (mainly 2N1304 (NPN) & 2N1305 (PNP) alloy-junction Germanium transistors, & 2N2635 transistors) on 8 boards 290 mm x 170 mm (11.5' x 7'), and delay line memory. The EC-130 (without square root) was one of the first all-transistor electronics calculators, in 1964.Р”В¬apabilities - 4 functions, memory, square root.Р”Вisplay - 4 lines of 12 characters each, using cathode ray tube, see below. Uses a crt (Cathode Ray Tube) to display the contents of the four registers. Location Currently not on view Credit Line Gift of The Singer Company, Friden Division 1964 ID Number CI.334377 catalog number 334377 accession number 313935 Object Name electronic calculator Physical Description plastic (overall material) metal (overall material) Measurements overall: 26 cm x 46.Ten-key electronic desktop calculator with square root. An extensive discussion of the development of the Friden 130 is at the Old Calculators Web Museum.

ThereРІР‚в„ўs nothing I can say that can better explain or build on this video, so please watch and enjoy. The video shows off a Friden EC 130 Calculator, the worldРІР‚в„ўs first solid state calculator. Mathematics for the Space Age: The Totally New Friden 130 Electronic Calculator, undated advertising booklet. ItРІР‚в„ўs from the YouTube channel TanRu Nomad, a great channel IРІР‚в„ўve been subbed to for a while that covers retro games and computers. Smith, РІР‚СљElectronic Calculators Gaining,РІР‚Сњ New York Times, August 7, 1965, p. Friden soon introduced the 132 electronic calculator, which took square roots. Within a year, the price was down to $1,695. Friden, Inc made early EC (Electronic Calculator) model 130 in 1963 sold for around 2,200, other mod. In August of 1964, the Friden 130 electronic calculator went on the market, selling for $2,150. The 1960s famous vintage early electronic calculator. In 1963 Friden was acquired by Singer Company. A description of the primary functions of the Friden electro-mechanical calculator. The Friden Calculating Machine Company began manufacturing mechanical calculating machines in California in the 1930s. A mark on the bottom at the front reads: MODEL 1. A mark on the front next to the display reads: 130 ELECTRONIC CALCULATOR. Tags on the front and on the back of the machine read: Friden. The bottom line of the display shows the answers, and numeric entries as they are entered.

If the numbers are smaller, the digits to the left are zeroes. Behind the keyboard is a cathode ray tube display that shows four rows of numbers. This way of representing arithmetic operations is known as reverse Polish notation, and would be used on several electronic calculators.

In entering arithmetic operations into the calculator, one first keys in a number, then pushes the enter key, then keys in the second number, and then pushes the key for the operator (e.g. Friden STW 10 Mechanical Calculator Demo. It also shows the very impressive internals of the calculator. Who knows a mechanical calculator could be a musical instrument. A decimal point selector dial is on the right. This is a favorite of mine, the Friden March. The Friden EC-130, introduced in 1964, is a contender (together with the IME 84 and the Sharp CS10A) for the accolade of the first all-transistorised desktop calculator. In addition to keys for the four arithmetic operations, it has change sign, enter, repeat, clear entry, clear all, store, recall, and overflow lock keys. The hefty instrument has an array of nine square plastic digit keys, with a zero bar and a decimal point bar below these. My 1957 Friden STW 10 mechanical calculator is due for an appearance in a high quality documentary about women that made mathematical calculations for NASA. This page of the Old Calculator Web Museum is a timeline of known historical points, people, milestones, and other time-related material relating to calculator technology. Description This is one of the first fully transistorized electronic calculators.

Eliot Elisofon Photographic Archives, African Art.

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