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UNIX
developed c. 1969 – DEC PDP-7 Assembly
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Language
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BCPL –
a user friendly OS providing powerful
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development
tools developed from BCPL.
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Assembler
tedious long and error prone.
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A new
language “B” a second attempt. C. 1970
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A
totally new language “C” a successor to “B”.
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C. 1971
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By
1973 UNIX OS almost totally written in “C”
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