Mechanical Calculator

A mechanical calculator, or calculating machine, was a device used to perform the basic operations of arithmetic. Most mechanical calculators were comparable in size to small desktop computers and have been rendered obsolete by the advent of the electronic calculator.

The mechanical calculator was invented in 1642 by Blaise Pascal, it was called Pascal's Calculator or Pascaline. The first commercially successful device, Thomas' arithmometer, was manufactured from 1851. The first machine with columns of keys, the comptometer, was introduced in 1887 while 10 key calculators and electric motors appeared in 1902. The use of electric motors allowed for the design of very powerful machines during the first half of the 20th century. In 1961, A full-keyboard machine, the Anita from Sumlock comptometer Ltd., became the first desktop mechanical calculator to receive an all electronic calculator engine, creating the link in between these two industries and marking the beginning of its decline. The production of mechanical calculators came to a stop in the middle of the 1970s closing an industry that had lasted for 120 years.

The calculating engines of Charles Babbage were the first automatic mechanical calculators in the world. Babbage started work on his analytical engine in 1834, "in less than two years he had sketched out many of the salient features of the modern computer. A crucial step was the adoption of a punched card system derived from the Jacquard loom" which made it the first programmable calculator. Howard Aiken mentioned Babbage extensively when he convinced IBM to build the Harvard Mark I in 1937 ; when the machine was finished some hailed it as "Babbage's dream come true". Babbage never built his steam powered mechanical calculators but in 1855 the swede Georg Scheutz became the first of a handful of designers to succeed at building a smaller and simpler model of his difference engine for the purpose of printing mathematical tables.

Read more about Mechanical CalculatorAncient History, Operating An Odhner Calculator

Other articles related to "mechanical calculator, mechanical, calculator, mechanical calculators":

Charles Xavier Thomas
... the first commercially successful mechanical calculator, the Arithmometer and for founding the insurance companies "Le Soleil" and "L'aigle" which, under ... making it the first mass produced mechanical calculator in the world, and at the time, the only mechanical calculator reliable and dependable enough to be ...
History Of Computing Hardware - Earliest True Hardware
150–100 BC), which are generally regarded as the earliest known mechanical analog computers. 10–70 AD) made many complex mechanical devices including automata and a programmable cart ... Other early versions of mechanical devices used to perform one or another type of calculations include the planisphere and other mechanical computing ...
Mechanical Calculator - Operating An Odhner Calculator
... The Odhner arithmometer was the most produced mechanical calculator ... an old machine, nevertheless it represents how one operates any basic rotary calculator ... (10-2 = 8) Thinking ahead, instead, you can subtract twice before adding the calculator will keep track for you ...
Timeline Of Computing Hardware 2400 BC–1949 - 1642-1850
... Event 1642 French polymath Blaise Pascal invented the mechanical calculator ... Called machine arithmétique, Pascal's calculator and eventually Pascaline, its public introduction in 1645 started the development of mechanical calculators first. 1709 Giovanni Poleni was the first to build a calculator that used a pinwheel design ...
Ryōichi Yazu - Mechanical Calculator
... In March 1902 Yazu applied for a patent on his mechanical calculator, called the Yazu Arithmometer ... It was a gear type calculator with a single cylinder and 22 gears, capable of arithmetic calculations up to 16 digits, with automatic carry and end of calculation functions ... The calculator was expensive, costing 250 yen, more than ten times the monthly salary of a newspaper reporter or lower-level government official ...

Famous quotes containing the words calculator and/or mechanical:

    Man is a stream whose source is hidden. Our being is descending into us from we know not whence. The most exact calculator has no prescience that somewhat incalculable may not balk the very next moment. I am constrained every moment to acknowledge a higher origin for events than the will I call mine.
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