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Unit-3 ICT Skills-II
INFORMATION TECHNOLOGY 3
AND COMMUNICATION
A computer’s operating system coordinates the resources of hardware, software and humanware.
An operating system refers to the set of programs that provides an interface to use the resources
of computer system effectively and e ciently. It begins itself and is executed when a computer is
switched ON.
he operating system sets the standard for the application programs that run on the computer.
pplication programs used on the computer have to be written in such a way that they operate in
proper coordination with the operating system.
he operating system performs basic tasks such as booting the system recognising input sending
output keeping track of location of files and directories on the disk controlling peripheral devices
such as disk drives printers etc.
APP APP
APP APP
Operating
System
Operating System
It acts as messenger between the computer hardware and the application programs by ensuring
or establishing a connection between the application and the hardware device such as a printer
attached to a computer.
48 Touchpad Information Technology-X

