Input units,Output units, Booting and Enter key

By typing on keyboard you can send a message to computer.Whatever you type, it goes into memory of computer. This way you feed data in computer as input.
Data can be put in computer with the help of input units. Input unit may be in the form of keyboard, a floppy disk or Joystick.
Computer send the results and information with the help of output units. The output unit may be in the form of a screen (also known as Visual Display Unit),printer or plotter.
Switch on the Monitor by pressing the on-off switch.Look at the Monitor.The computer will give some interesting messages. This process is called Booting.
If you want to go to the second line while typing on the keyboard,for this you will press the [Enter] key.Now,you can write on the next line.

Hardware

Hardware- V D U (visual display unit)
System Unit(C.P.U.=Central Processing Unit)
The Hard Disk Drive
The Floppy Disk Drive
Mouse
The Printer
Keyboard



V.D.U. The unit that resembles a TV screen is called the V.D.U. or monitor.The information displayed by the V.D.U. Hence the V.D.U. is an output device. V.D.U. can be of various types:

1. Monochrome V.D.U. displays single colour(green,white or umber)
2. Colour V.D.U. displays 16 colours
3. Low Resolution V.D.U. displays poor quality of graphic
4. High resolution V.D.U. displays superior quality of graphic

System Unit (C.P.U.):- is really a computer itself.It performs all operations,calculations and processes. That is why it is called as central processing unit.Inside its are electronic components.Actual processing is the Micro processor Chips. Another component of the system unit is Internal Storage.

The System Unit contains the memory of the PC. Besides the Micro Processor the System Unit is also contains storage area where the data store before being actually processed. This area is called Internal storage.
For permanent storage of data, external storage media can be used with a PC system.There are two kinds of external storage media commonly used in PCs are
1. Hard Disk Drive 2. Floppy Disk Drive

1. Hard Disk Drive:- The System Unit (C.P.U.)contains PCs hard disk drive,also known as a fixed disk drive.The hard disk drive consists of a hard disk, a mechanism that spines the disk. a head that reads information and writes information to the hard disk. The hard disk spines within the drive.The head reads information from it and records information onto it. Hard disk contains the operating system program, that tell your PC how to work. Also it stores program and information file on the hard disk.
2. Floppy Disk Drive:-A floppy disk drive transfers information to and from your hard disk or directly into memory. Floppy Disk Drive reads and record information on floppy disk.They are slower and store much less information than your hard disk. E.g. Software manufacturerdistributes programs on Floppy Disk Drive.When we copy the program from floppy disk to hard disk, floppy disk are the good way to transfer information from your PC to another PC or to store copies of information on your hard disk. If we have aard disk and a floppy disk, then the Floppy Disk Drive is called A:,and the Hard Disk Drive is called C:.
   

The Keyboard:-Components that closely resembles with a typewriter is called the Keyboard. It commutes with PC by typing instructions and pressing keys on the keyboard. There are several types of keyboards such as IBM PC Keyboard and IBM PC/XT,IBM PC/AT.

Computers

Computer is an electronic device which can do arthmetic,reading and writing.It can do many things such as on internet we can do searching,surfing the sites, making sites and blogs,information collection,money transaction,even can make money by making sites,even company sites can be made giving the information for the company,even business conversations can be done through internet and even many things can be learnt through chatting online and many contacts can be done through this kind of net and even networking can be done +receiving and sending of mails can be done through internet.In internet emails can also be viewed through Outlook Express.
There are many kind of browsers such as Internet Explorer,Netscape.Internet Explorer has many kind of versions which can be used with different kind of windows.Windows are also of different types such as Windows 95,98,2000,ME(millenium) and XP which takes more memory in computers than windows 2000 and all.Windows 2000 is better to get installed than Windows XP.Windows ME has come to an end from the last two to three years.Internet Explorer version 5.0 and above can be better installed on 98 and above versions There are many kind of browsers such as Internet Explorer,Netscape.Internet Explorer has many kind of versions which can be used with different kind of windows.Windows are also of different types such as Windows 95,98,2000,ME(millenium) and XP which takes more memory in computers than windows 2000 and all.Windows 2000 is better to get installed than Windows XP.Windows ME has come to an end from the last two to three years.Internet Explorer version 5.0 and above can be better installed on 98 and above versions of Windows.
Intranet is another part of computer which is done within that building and even can be accessed by those people who works within that company.It is not used by the whole world.whereas internet can be accessed by the whole world.
On computers we can even solve our problems through MSOFFICE in which msword,msexcel,mspowerpoint,msaccess,msbinder and msoutlookexpress can be used.We can even do painting in the computers,can make so much programs through different kinds of softwares such as BASIC,GWBASIC,C++,Visual Basic etc.