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Sinclair Wrist Calculator : ウィキペディア英語版 | Sinclair Wrist Calculator
The Sinclair Wrist Calculator was a wrist-worn calculator produced by Sinclair Instrument and introduced in 1977. ==History== The Wrist Calculator was launched in February 1977 by Sinclair Instrument, a company established in parallel to Sinclair Radionics when the latter started to encounter financial difficulties.〔(【引用サイトリンク】title=Sinclair Wrist Calculator )〕 It was only available as a mail-order kit, and cost around .〔〔(【引用サイトリンク】title=Sinclair Wrist Calculator )〕 Despite the difficulty in assembling the kit due to the small size of the parts and their variability in specification, 10,000 were sold around the world. 20,000 were exported to the United States, but most went unsold and were returned to Sinclair.〔 It was described as an "utter dud" and "impossible-to-build" by the journal ''International Design''.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Sinclair Wrist Calculator」の詳細全文を読む
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