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The brief history of operating systems form 1940-90.
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OPERATING SYSTEMS The brief history of operating systems form 1940-90: In the 1940's there were no operating systems were in existence. There were single users, who did ALL the machine handling. Programming was usually done in machine code, mostly done as pure binary in Punched Card images, but using switches and wires. The storage was very limited on these computers. In the late 1940's assemblers were developed for the translation of mnemonic machine code into binary. In the 1950's Operating systems for Single Stream Batch Processing were developed. Previously, the programmer was also the operator, who could make run time decisions. In batch processing the programmer was not usually present, and therefore instructions had to be provided in the "job control language" cards loaded before the program cards and data cards. This was not good for program development, since even trivial syntax errors caused the program to abort; this resulted in another...
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