翻訳と辞書 Words near each other ・ Friedewald train collision ・ Friedewald, Hesse ・ Friedheim ・ Friedheim, Missouri ・ Friedhelm ・ Friedhelm Busse ・ Friedhelm Döhl ・ Friedhelm Eicker ・ Friedhelm Eronat ・ Friedhelm Frischenschlager ・ Friedhelm Funkel ・ Friedhelm Gehrmann ・ Friedhelm Haebermann ・ Friedhelm Hardy ・ Friedhelm Hengsbach ・ Friedhelm Hillebrand ・ Friedhelm Konietzka ・ Friedhelm Loh ・ Friedhelm Loh Group ・ Friedhelm Ortgies ・ Friedhelm Sack ・ Friedhelm Schütte ・ Friedhelm Waldhausen ・ Friedhelm Wentzke ・ Friedhof ・ Friedhof Heerstraße ・ Friedhof II der Sophiengemeinde Berlin ・ Friedhof Trenkebergstraße ・ Friedia Niimura ・ Friedkin Airlines Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Friedhelm Hillebrand ： ウィキペディア英語版 Friedhelm Hillebrand Friedhelm Hillebrand is a German engineer who has been influential in setting mobile telecommunications standards. As chairman of the non-voice services committee for the Global System for Mobile Communications standard in 1985, he conducted experiments to determine the length needed for text messages and found that 160 characters was sufficient. This subsequently became the basis for the 140 character limit now used by Twitter. He was born in Warstein in 1940 and, even as a child, was active in amateur radio. He gained a master's degree in telecommunications in 1968 and then started his career with the German post office, which was then responsible for telephones too.〔 After retiring from that career, he started a consultancy advising on technology patents.〔 In 2009, he lived in Bonn.〔 ==References== 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「Friedhelm Hillebrand」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.