1. AN ABBREVIATED HISTORY OF OPERATING SYSTEMS
and then "What is an operating system?" ... However, this definition does not begin to describe how varied an operating system can be. ... Even though the machine was binary, rather than decimal like the ENIAC, the individual "words" of data were moved between various parts of the machine by sending either a pulse ("1") or no pulse ("0") down a single wire (Rojas 6)." ... In these systems, memory and the system processor accounted for most of the cost. ... The operating systems for these computers were generally stacked job batch systems. ...
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