What is computer? Working of a computer system.(Full Tutorials)

A computer is an electronic machine that is high speed. basically computer used widely in homes office banks Hospital supermarkets School defence and weather forecasting and many other places.

What is computer? Working of a computer system.(Full Tutorials)

Working of a computer system:

A computer is a Programmable electronic device that works in IPO circle that means input processing output. Computer understand only two digits 0 and 1. 0 means off an 1 means on. It is also called binary language or machine language.
Input and output devices provided a means of communication between the computer and the outside world.

Input devices: some of the devices which are used to enter the data into computer are called input devices.
Example :keyboard, mouse, scanner ,joystick ,light pen etc.

Output devices: some of the devices which are used to display the process result or output are called output devices. Example:monitor, printer, plotter, speaker etc.

Computer and its main parts:

A computer is an electronic device which works in IPO (input processing output) circle. It processes input data to generate the output information.

Data is text or number or images or sound which is entered by us as input in the computer system.
Information is the output given by the computer after processing the data.

What the full form of computer: the full form of computer is common operating machine particularly used for trade education and research.The computer has two main components of which are defined the working of the computer these components are: hardware and software

What is hardware?

These are most physical devices of computer which we can see and touch on the basis of their functionality they are for the divided into different categories like as input,output,processing and storage.

What is called software:. 

Software is a set of instruction given to the computer to perform a task. We cannot touch or feel the software.
These are present in the form of programs.There are two types of software
1. System software which is responsible for managing and controlling hardware.
 2.application software which performs a specific task.

Features of a computer:

A computer is a defined following features:

Speed: 

The computers work at a very high speed they process the data in a fraction of second. They can solve tough mathematical calculations accurately computer can work very fast.

Accuracy: 

Computers are highly accurate they calculate the correct only if the input data is correct and they calculate errors if the computer given to a wrong input.

Storage: 

Computers can install a huge amount of data which can be retrieved as and when required the data can be stored in the primary memory and secondary memory of the computer system.

Versatility: 

Computer can be used by multi  user. It can perform different tasks at the same time.

Types of computers: 

Depending upon the construction size technology used and purpose computers are classified into four types.

1. Microcomputers:

 These are the most commonly used computers in a day to day life and they are characteristics by there is small size and less cost and they are also called personal computers or PC because of their designed meant for a single user or personal use.

Features of micro computers: 

CPU of microcomputer is single chip for a microprocessor.
They are used in office Home School dance etc.
They are not very bulky and take less space.

Some examples of micro computers are desktop computers and laptops pocket computers notebooks palmtops game consoles etc.

2. Mini computers:

 This computer are flexible and can be used by a large number of people at the same time. These are the general purpose computers. these are more powerful than microcomputers and also have greater storage capacity.

This can be used as a network and internet service. These are usually used by a small firms  and a business.

Features of mini computers:

They came into existence around 1960.
They are based on the transistor and core memory technology. For example PDP-8, Vax.

3. Mainframe computer: 

These are large powerful and expensive computers. They can support hundreds and thousands of users at a time. They are usually used in universities banks government organisations etc.
The example of Mainframe computer is PDP 10, IBMZ Series.

4. Super computer:

Supercomputers are the fastest and most powerful of all computers. They are very expensive and are generally used in a large processing of data is required
.

Features of supercomputer:

They are introduced in a 1960 centuries.They are used in the field of weather forecasting ,nuclear energy research, petroleum exploration and animated graphics.
Some example of supercomputers are Cray-1, PARAM, Beowulf etc.