Operating system (OS) is the most essential
software that runs in our computers. It is a collection of software that
controls the computer hardware and provides services to the computer programs
(also called as applications). OS is the first software that is installed into
the computer and without it; the computer is of no use as it will not be able
to communicate with the hardware. Once the
OS has started up, it manages all of the software and hardware on
the computer. Sometimes, there are many different programs
running all at the same time, and they all need to access the computer’s central
processing unit (CPU), memory, and storage. The OS manages all of this to make sure
each program gets what it needs and do not interfere with each other. It
performs various operations like taking input from keyboard, displaying output
on the screen, working of monitor, mouse, scanner, printer and other external
(hardware) devices. OS is also responsible for security of the computers,
ensuring that unauthorized users do not access the computer data. Some of the
most common OS are Microsoft Windows, Linux and Apple Mac OS. Most operating
systems use Graphical User Interface (GUI) which allows the user to click on
icons on the screen and give commands to the computer. All OS may not have the
same GUI, like Windows 7 has a different GUI than Apple Mac OS.
Nowadays, OS is present in mobile
phones, video games etc. The different types of mobile OS are Symbian, Android
and Apple iOS.
0 comments:
Post a Comment