Friedhelm Hillebrand Engineer
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Friedhelm Hillebrand is a member of the following lists: 1940 births, Engineer stubs and German engineers.
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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.
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