Unix creator Dennis Ritchie dies aged 70
Pioneering computer scientist Dennis Ritchie has died after a long illness.
Mr Ritchie was one of the creators of the hugely influential Unix operating system and the equally pioneering C programming language.
A vast number of modern technologies depend on the work he and fellow programmers did on Unix and C in the early days of the computer revolution.
Those paying respects said he was a "titan" of the industry whose influence was largely unknown.
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