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Sinclair Cambridge
The Sinclair Cambridge was a pocket-sized calculator introduced in August 1973 by Sinclair Radionics. It was available both as kit form kit to be assembled by the purchaser, or assembled prior to purchase. The range ultimately comprised seven models, the original "four-function" Cambridge, which carried out the four basic mathematical functions of addition, subtraction, multiplication, and division, being followed by the Cambridge Scientific, Cambridge Memory, two versions of Cambridge Memory %, Cambridge Scientific Programmable and Cambridge Universal.〔(【引用サイトリンク】url=http://oldwww.nvg.ntnu.no/sinclair/calculators/cambridge.htm )〕
== History ==
The Cambridge had been preceded by the Sinclair Executive, Sinclair's first pocket calculator, in the September of 1972. At the time the Executive was smaller and noticeably thinner than any of its competitors, at , fitting easily into a shirt pocket.〔(【引用サイトリンク】title=Have you got a Sinclair Executive? )〕
A major factor in the Cambridge's success was its low price; the Cambridge was launched in August 1973, selling for ( + VAT) fully assembled or ( + VAT) as a kit. An extensive manual explained how to calculate functions such as trigonometry, n-th root extraction and compound interest on the device.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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