Subject Training

Welcome to Computer Basics

Computer Basics will introduce you to all the basic concepts that you need to know.

What is a Computer?

   

         An electronic device takes input from User and process data and gives output. It manipulates information, or "data." It has the ability to store, retrieve, and process data. You can use a computer to type documents, send email, and surf the Internet. You can also use it to handle spreadsheets, accounting, database management, presentations, games, and more. 

How Computer Works :

Input: 

Information and programs are entered into the computer through Input devices such as the keyboard, disks, or through other computers via network connections or modems connected to the Internet. The input device also retrieves information off disks.

Input Devices :

1. Keyboard
2. Mouse
3. Scanner
4. MIC
5. Joystick
6. OMR (Optical Mark reader)
7. Bar code reader
8. Web cam
9. Light Pen
10. Track ball
11. Touch screen

Processing: 

The CPU or central processing unit is sometimes called the Control Unit and directs the operation of the input and output devices. The Coprocessor or the Arithmetic-Logic Unit does arithmetic and comparisons.

Output:  

Output Devices displays information on the screen (monitor) or the printer and sends information to other computers. They also display messages about what errors may have occurred and brings up message or dialog box asking for more information to be input. The output device also saves information on the disk for future use.

Output Devices :

1. Monitor
2. Printer
3. Speakers
4. Projector

Computer Tips For New User's.

Change Icon shape :

Right click on Desktop --> Click Properties --> Click Desktop --> Click "Customize Desktop"

--> Click Browse --> Go to "System32" folder --> type "shell32.dll" file name 

--> Select the File from list  --> Click Open --> Choose Icon from appeared list 

--> Click OK (3 times) .