Definition of computer

A computer is an electronic device that manipulates information, or data. It has the ability to store, 

retrieve andvprocess on input data and gives you output. The computer can also can be defined as a device wich accepts data,

Store data, processes data as instructed and retrieves the stoard data as and when required, Prints the result is desired layout.

Characteristics of computer-

Accuracy, Reliablity, Versatility, Storage capacity, Automation, Diligence

Computer is a sort of electric brain, Wich is capable to solve mathamaticle problems within moments. In computer 

system, Different parts of a computer are organized in such a given specific task.

Five major oprations of a computer system are as follows:

A- Accept data or instruction (as input). 

B- Store data.

C- Process data as per given instruction (Commands) by the user.

D- Provide result (in the form of output.

What is input-

This operation is used to enter the information in the computer. Information can be any data or a program.

The simple Defination of input is that input is the process to provide command and instruction to the computer through  

input device like keyboard, and mouse.

What is input device- 

The input device is the gadget witch is use to provide information to the computer. Their are many types of input device

and some device are important to give information to the computer. Mainly two types of input device is necessary to use a computer, That is keyboard And second is Mouse.

The other input device is 

                                  1. Keyboard 

  2. Mouse

  3. Scanner

  4. Web Cam

  5. Microphone

  6. Touchscreen

  7. Stylus

  8. Light Pen

                                   9. Joystick

what is a output-

This opration is used to display the entered data or the processed data.

The simple Defination of output is that output is the process to provide information or result to the user on the basess of input through  

output device like monier, screen and printer.

What is output device-

The output device is the gadget witch is use to provide information and result to the user on the basess of provieded information from user. Their are many types of output device

and some device are important to take information from the computer. Mainly two types of output device is necessary to gate information from computer, That is monitor And printer.

The other output device is

                                   1.Screen 

   2. Monitor

   3. Printer

   4. Projector

                                   5. Speaker

   6. Plotter