Computer is an electronic machine which accepts data in raw
format and process the data in human understandable format modern day computer
can store or save incredible amount or volume of data in computer hard disk
drive or external sources such as external hard drives or usb pen drives or in DVD’s.
Computer were invented to perform numerical calculations
which were difficult to handle and the use of these modern machine has made
users life easier compared to old days..
In the first generations of computer they used vacuum tubes
which used to emit huge energy while processing and needed large space for accommodation
and installations.
Computer are used in health space research military every
where they are an integral part of human society and has made a significant role
in the development of human race.
Computers have mainly 2 parts computer hardware and software
let us discuss on each topic in brief.
Computer hardware are the parts or components which are used
in computer such as Computer motherboard ,hard disk drives and other
peripherals and devices which are commonly used like printer scanner etc.
These components can be touched and feel unlike computer
software’s the computer hardware cannot work efficiently without system software
and application software’s.
Has the overall development of computer there are several
companies which manufacture or developed new technology based hardware
components peripherals and devices keeping in mind of users need.
Computer use has a significant role in weather forecasting
and educations name any field you will come to know the use of computer and how
important it has been in reducing human effort while use and their practice.
Computer peripherals and devices are cheaper these days
because of the high intense competition around the IT companies which
manufacture these devices these devices are readily available in any part of
the world.
Computer software can be divided into two major category .
A] System Software
B] Application Software
System software’s are those software or programs which is
must for any computer to perform to its full functions. This software’s are the
integral part of computer system.
The common examples of system software are operating system
and device drivers.
Operating system directly contact computer devices to
functions as it send necessary programs to run and execute.
The famous operating system are msdos which is designed and
developed by Microsoft corporation other used operating system of Microsoft are
WINXP WIN7 WIN8 etc.
On The other hand mac and linux are famous in some category
of users who are highly advanced.
Application software are those software’s which are designed
and developed for some specific task which makes the load or burden of the
users less as it can do complex to complex functions with a fraction of time
and resulting in saving time and money .
Microsoft corporation has also developed some application
software for their users which are highly popular such as MS-OFFICE ,there are
also pre installed application software which comes directly with the operating
system when installed in computer hard disk drive.
For example :: paint.
Some software developer developed software on specific and
special demand or requirement of customers .
According to a study the main threat to computer is a virus
.
Computer virus is nothing but a program or code which is
designed and developed to harm computers and steal their sensitive information
which can be details of credit cards.
Computer virus can delete important system files which are necessary
to boot computer they can even delete ,replicate and hide itself and can infect
other computer when comes in contact.
The primary source of spreading computer virus is internet
and removable device such as hard disk and usb pendrives.
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