Presentation about computers

operating system (main software)

A computer is a digital electronic machine

Any digital computer carries out five functions in gross terms:
 Takes data as input.
 Stores the data/instructions in its memory and use them when
required.
 Processes the data and converts it into useful information.
 Generates the output
 Controls all the above four steps

Input Devices

responsible for controlling, integrating, and managing the individual hardware components of a computer system
.
example of System Software:
1) Microsoft Windows
2) Linux
3) Unix
4) Mac OSX
5) DOS

viruses They can be very danger for your pc but we can avoid them by just downloading antivirus programs

We can download
for example Avast
which is very easy
to use