20-08-2012, 03:23 PM
Operating Systems and Windows
OperatingSystems.pdf (Size: 2.11 MB / Downloads: 155)
What is an Operating System?
•The most important
program that runs on your
computer. It manages all
other programs on the
machine.
•Every PC has to have one to
run other applications or
programs. It’s the first thing
“loaded”.
Operating System
•It performs basic tasks,
such as:
•Recognizing input from the
keyboard or mouse,
•Sending output to the
monitor,
•Keeping track of
files and directories
on the disk, and
•Controlling
peripheral devices
such as disk drives
and printers.
Is There More Than One Type of OS?
•Generally, there are four types,
based on the type of computer
they control and the sort of
applications they support.
1.Single-user, single
task
This type manages the
computer so that one user
can effectively do one
thing at a time.
Real Time Operating Systems
RTOS are used to control machinery,
scientific instruments, and industrial
systems.
There is typically very little userinterface
capability.
Resources are managed so that a
particular operation executes
precisely the same every time.