The algorithm that friden used for for calculating square root was implemented mechanically in some. When the friden 2 electronic calculator was stateofthe. First transistorised tabletop calculator, friden ec over. The calculator that helped land men on the moon ieee spectrum. This, the pride and joy of my collection, is a friden stw10 fully automatic calculator, serial number 6431, manufactured in 1961. This is a very comprehensive 80page manual for the fullyautomatic friden model stw calculator with the 10key multiplier keypad. Friden, fully automatic calculator, model stw pamphlet january 1, 1949 5. See all formats and editions hide other formats and editions. Small amount of memory register storage, as well as program storage memory.
Electronic calculators the vintage technology association. A description of the primary functions of the friden electromechanical calculator. If you are a student or a electronics hobbyist who does not need to have complicated electronics design software to help you in your design work, it is strongly recommended that you consider the following free electronics design software that can be downloaded. Friden even produced a model which could take square roots automatically. A very large service manual including tools used to repair the friden stwmanual is a. Consider the humble pocket calculator, these days so cheap and easy to construct that theyre essentially disposable. Reverse polish notation rpn, also known as polish postfix notation or simply postfix notation, is a mathematical notation in which operators follow their operands, in contrast to polish notation pn, in which operators precede their operands. The friden 2 was the successor to the groundbreaking and very successful friden.
In the late 1950s friden acquired the commercial controls company and its flexowriter product. This listing is for a vintage 1970s singerfriden electronic adding machine calculator carrying case bag this very rare item came from an estate sale of a former friden, inc. Using a slide rule most of the time and electronic calculators not being allowed at school, i wasnt aware at all of the changes that took place. If you have a friden stw this service manual is a must. A machine identical to this has a special place in my personal history. Price new from used from pamphlet, january 1, 1949 please retry. The friden srw was an imposing calculator weighing 42lbs. Like the friden electronic calculators, it used a small cathoderay tube to. Electronics calculator is a utility application consisting of various calculators, conversions, reference tables and basic pocket calculator. In about 1979, the company was acquired by alcatel and invented the first electronic postage meter. Calculator academic dictionaries and encyclopedias. Carl friden died in 1945 aged only 54, but his company went on to continued successes, most notably with the model stw fullyautomatic calculator of 1949, the model srw squareroot calculator of 1952, and the ec electronic calculator of 1964. Not only does it emulate the original wang calculators behavior, but it can operate as a nixie clock or as a reverse polish notation calculator. The singerfriden ec1116 is, featurewise, top of the line calculator in the 111xline of machines designed and built by hitachi for singerfriden.
Vintage friden stw mechanical calculator museum 1940s. The ec2 model was introduced in 1965 and additionally has the squareroot function. The slide rule is basically a sliding stick or discs that uses logarithmic scales to allow rapid multiplication and division. In 1962, friden introduced one of the earliest transistorized electronic calculators, the. A modern electronic package for the wang 300 series calculator i brought a wang 360 calculator console back to life with a modern electronic package. This was one of the very early commerciallyavailable solidstate desktop electronic calculators. This machine turns on, but makes a horrible buzzing noise and is. Vintage mechanical calculator friden stw10 friden calculating machine company friden model stw 10, sn 451465ab technology. The lower register showed the number of items added or subtracted, multipliers, and quotients. Pic software, pcb designer, circuit designer, microchip, ic programmer, electrical and electronic design software, component calculator, printed circuit board cad software, analysis, simulator, drawing tools, compiler, tester and more software. Electronic calculator 2 is the must have companion for anyone who works with electronics, whether experienced or novice, working on vintage sets or the most up to date of circuits. I joined the company in 1981 and helped design the second generation postage meter along with some related products.
First programmable scientific pocket calculator hp 65, with register and program. Vintage cavalier chess set w faux wood plastic case 4. Friden model desktop electronic calculator national museum. An electronic calculator is a small, portable, usually inexpensive electronic machine used to perform the basic operations of arithmetic. You are bidding on a very rare friden model srw mechanical calculator. It has an interview with nicholas bodley, one of the original eight technicians to be trained at the friden factory to service this amazing fullyelectronic calculator, and includes technical information about its. The last mechanical model, the srw 10, even had a square root function. Friden fully automatic calculator model stw operating instructions and suggestions 1958 80 pages plus covers, a5 size original 812 x 512, comb bound. Fridens senior management designated fridens vp of research and development, mr. Like many other electronics companies in the early 1970s, crown radio corporation jumped into the electronic calculator market as soon as an offtheshelf singlechip calculator became available.
The friden calculating machine company john wolffs web. The description polish refers to the nationality of. The friden ec, introduced in 1964, is a contender together with the ime 84 and the sharp cs10a for the accolade of the first alltransistorised desktop calculator. Created in the early 1960s, the friden ec2 is a thing of beauty and a wonder to behold. The friden calculating machine company that built this machine later became friden mailing equipment and built postage meters. The friden company was founded in 1934 during the great depression by swedish immigrant carl friden, and.
Roughly the size of an electric typewriter, it could be used in program mode like a. This type of calculator represents the endoftheline for mechnical digital calculation. Friden operated in san leandro until the 1970s making early electronic accounting machimes there and in nijmegen, holland. The controller read the program sequences from the tape, and actuated solenoids. Reactance impedance star delta transformation ac power decibel power supply.
Friden electromechanical calculators were robust and popular. Back in the early 60s, when i was just a child living in seattle, washington my birthplace, one of our neighbors owned a business which involved use of a calculator to generate dairy tank calibration charts. Friden 12 electronic calculator instantaneous square root simple 11key keyboard operating time in milliseconds television screen displays answers silent operation awardwinning design automatic decimal control to places ability to hold two constants a trademark of frioen. This exhibit is dedicated to the memory of clifford rueff1519228262007, senior service technician for fridensingertrw out of the denver, colorado office. A modern electronic package for the wang 300 series calculator. Electronic calculators which were available in the period between 1965 and 1980.
Now i consider it my mission to setup a small collection of well preserved and operational calculators which are representative for the changes that took place in that period. The cadillac of desktop calculators in the mid20th century, this calculator represented nearly the culmination of a line of mechanical calculator evolution that. The software was developed in the early 90s as a component of a specialized integrated engineering software system. Friden ec2 electronic calculator the old calculator museum. Electronic circuits software, pic, pcb, electrical cad. The friden company was founded in 1934 during the great depression by swedish immigrant carl friden, and operated near san francisco in san leandro, california. However if you find my software useful please consider making a small donation to support further development and upkeep of the site. Cliff came upon a pair of friden ec2 electronic calculators, and. An electronic calculator is typically a portable electronic device used to perform calculations, ranging from basic arithmetic to complex mathematics the first solidstate electronic calculator was created in the early 1960s. The hefty instrument has an array of nine square plastic digit keys, with a zero bar and a decimal. Faux leather exterior with sturdy sewn on handles, and padded cloth interior. It was founded by carl friden in san leandro, california, in 1934.
About 1970 the world of calculating machines rapidly changed from mechanical. See more ideas about vintage, calculator and calculator words. This article was initially written as part of the ieee stars program. Slide rules evolved to allow advanced trigonometry and logarithms, exponentials and square roots. Olivetti managed to retain control of its small electronic calculators.
Johnson sold friden to the singer company, of sewing machine fame, and friden put on sale one of the first alltransistor electronic desktop calculators, the ec followed by the ec2 which had the squareroot funtion. Carl friden was a gifted mecanical engineer, early in his life he worked for the marchant calculator company but by the 1930s he was working on his own mechanical inventions, including a greatly improved mechanical calculator. The alan kaminsky museum of antique computing devices. Ec2 is far more than just another resistor calculator although it does of course offer this facility. Electronics 2000 downloads free software including. Made in japan, this was also the first calculator to use an led display, the first handheld calculator to use a single integrated circuit then proclaimed as a calculator on a chip, the mostek mk6010, and the first electronic calculator to run off replaceable batteries. In 1962, friden introduced one of the earliest transistorized electronic calculators, the ec and then in 1964 the ec2, also with a square root function. In 1995 we decided to make it available as a standalone software product, which was originally called calc95. Friden ec electronic calculator the old calculator museum. When it was introduced in 1952, this was the first calculator capable of producing a square root using only one key instead of a laborious process. This is one of the first fully transistorized electronic calculators. Offidix office desk calculator, solar and battery dual power electronic calculator portable 12 digit large lcd display desktop calculator,handheld for daily and basic officeorange by offidix in stock on may 21, 2020.
The upper register showed totals, subtotals, products etc. Bruce flamm has a fascinating article on the friden ec2 in the collecting calculators section of this site. The cl80k desktop calculator is built upon the texas instruments tms0105, a first generation fourfunction chip similar to the tms0106 and tms0110. How much is a friden calculator model stw10 worth now. Singerfriden sold a series of desktop and handheld calculators into the mid1970s. Even up to the 1980s, knowing how to operate a slide rule was a basic part of mathematics education for millions of schoolchildren, even though by that time, mechanical. From the collection, a scannedin computerrelated document. The 111xline of machines include the ec1112, a firstgeneration alltransistor machine that began the line. It does not need any parentheses as long as each operator has a fixed number of operands. Modern calculators are more portable than most computers, though most pdas are comparable in size to handheld calculators the first solidstate electronic calculator was created in the 1960s, building on the history of tools such as the abacus, developed.
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