WEEK 2-3: COMPUTER SYSTEM SOFTWARE
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Operating System Concept
An
operating system (OS):
Is a collection of software that manages computer hardware resources and
provides common services for computer programs.
The operating system is an essential component of
the system software in a computer system and is the first program
loaded into the computer by a boot program and remains in memory at all times.
Application programs usually require an operating
system to function.
For hardware functions such as input and output
and memory allocation, the operating system acts as an intermediary
between programs and the computer hardware.
Operating systems can be found on almost any device
that contains a computer from cellular phones and video game
consoles to supercomputers and web servers.
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