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The IBM 602 Calculating Punch, introduced in 1946, was an electromechanical calculator capable of addition, subtraction, multiplication, and division. The 602 was IBM's first machine that did division. (The IBM 601, introduced in 1931, only multiplied.) Like other IBM calculators, it was programmed using a control panel.
Richard Alan Dreissigacker (born March 26, 1947, in New Haven, Connecticut) is a former American Olympic rower [1] and a founder of Concept2, a manufacturer of rowing equipment. [2] While studying engineering at Brown University he took up rowing and went on to represent the United States at the 1972 Summer Olympics .
The HP Voyager series calculator are keystroke programmable, meaning that it can remember and later execute sequences of keystrokes to solve particular problems of interest to the user. These keystroke programs, in addition to performing any operation normally available on the keyboard, can also make use of conditional and unconditional ...
Concept2, Inc. is an American manufacturer of rowing equipment and exercise machines based in Morrisville, Vermont.It is best known for its air resistance indoor rowing machines (known as "ergometers" or "ergs"), which are considered the standard training and testing machines for competition rowers and can be found in most gyms.
The Model K was an early 2-bit binary adder built in 1937 by Bell Labs scientist George Stibitz as a proof of concept, using scrap relays and metal strips from a tin can. The "K" in "Model K" came from " k itchen table", upon which he assembled it.
The company built mechanical, and then electromechanical calculators which had a reputation for reliability. First models were similar to the Odhner arithmometer. In 1918, employee Carl Friden designed a new model in response to patent challenges. It was a great success, and Friden became the chief designer until he left in 1934 to found his ...
Concept Two, concept ii, CONCEPT 2, or variation, may refer to: Concept2, a rowing equipment and exercise machine manufacturer; Rimac Concept Two, an all-electric ...
In the early model PC-100A, a switch inside the battery charger compartment allows use with the earlier SR-52 and SR-56 calculators as well as the TI-58/59 series. In addition, it also works with non-programmable TI machines of the era such as the SR-50A. (Remove the battery pack of a TI calculator and look for the row of printer interface pads ...