The (r)evolution of operating systems.

[ Thanks to Locutus for this link. ]

"An operating system is a program, pure and simply put it is a system interface between the hardware and user space programs. Put in terms of a sandwich (yes, yes, I know but I am hungry :) The hardware is the bottom slice of bread. The operating system is the various sandwich fillings and the user space programs are the top slice of bread. Depending on the selection of fillings in your operating system sandwich you can have a very tasty concoction indeed (cue Pavlov conditioned mouth drooling :).

"Like the first sandwich, (the food item not the Earl) operating systems started out as simple affairs. They then became more complex as computing needs grew. In other words what started out as a hunk of cheese between two chunks of bread is now two all beef patties, special sauce, lettuce, cheese, pickles, onions on a sesame seed bun."

Complete Story

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