Basic Computer ! Batra Computer Centre

Ph. No.: 8222066670, 4000670 Website: www.batracomputercentre.com


An Electronic Device Which Is Capable Of Receiving Information (Data) In A Particular Form And Of Performing A Sequence Of Operations In Accordance With A Predetermined But Variable Set Of Procedural Instructions(Program) To Produce A Result In The Form Of Information Or Signals.


1943- First Computer ENIAC- electronic Numerical Integrator and computer.

1943- IBM- International Business Machines – established to build business machines.

1977- Apple II lunched personal computer (pc).

1981- IBM personal computer, marketed windows

Now- Faster and smaller personal computers


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Personal

Computer

Mainframe

Computer

Minicomputer

Super

Computer


The most common types of computer is personal

computer- A personal computer that

is designed to sit on desk or table.

These are the system you see all

around you, in school, home and office.


Mainframe computer are used in large organization

such as insurance companies and banks, where many

people frequently need to use the some data. In the

traditional mainframe environment, each user accesses

the mainframe’s resources through a device called a

terminal.


First released In the 1960s, minicomputer got their name

because of their small size compared

to other computer of the day. The capabilities

of a minicomputer are somewhere between

those of mainframe and personal computers.

For these reason minicomputer are often

called midrange computer


Super Computer are the most powerful computers made,

and physically they are some of the largest. These system

can process huge amounts of data, and the fastest

supercomputer can perform more than one trillion

calculation per second.


A Complete computer system consists of mainly four parts:

1.Hardware ( The Computer0

2.Software ( Program)

3.Data ( Information )

4.User (People )


Hardware The computer’s hardware consists of interconnected electronic devices that you can use to control

the computer’s operation , input and output

Software tell the computer what to do. Here the program refers to any piece of software

Data A computer primary job is to process these tiny pieces of data in various ways, converting them into useful

information

User People are the computer operators, also known as users. One can argue that some computer system are

complete without a person’s involvement however no computer is totally autonomous.


Information Processing cycle is

set of step the computer

follows to receive data, Process

the data according to

instruction from a pragmas,

display the resulting

information to the user, and

store the results.



Input Device: The following are types of input devices.

Keyboard: It is most common type of input devices is keyboard which accept letters,

number, and command from the users. Mouse: This is another

type of input device through which the users.

Give command to the computer.Scanner: A Scanner can

copy a printed page of a text or graphic into

the computer's memory , freeing you from

creating the data from scratch.


Output Device: The following are types of Output devices.

Keyboard: It is most common type of input devices is keyboard which accept letters,

number, and command from the users. Mouse: This is another

type of input device through which the users.

Give command to the computer.Scanner: A Scanner can

copy a printed page of a text or graphic into

the computer's memory , freeing you from

creating the data from scratch.



ADDRESS: SCO -15, Dayal Bagh, Near Hanuman Mandir Ambala Cantt-133001 HaryanaPh. No.: 9729666670, 8222066670 &0171-4000670Email ID: [email protected]: www.batracomputercentre.com


Date post:	14-Feb-2017
Category:	Education
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