This document defines and describes key aspects of information technology (IT) including system software like operating systems, application software used by end users, hardware components, and common IT jobs. IT involves using computers and computer software to collect, store, process, transmit and retrieve information. Common types of system software include operating systems while popular applications are for word processing, spreadsheets, and presentations.

3.  Information
technology IT)
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4. 






5.  system software
Microsoft Windows,
Mac OS X, Linux
application software)
end user)



 device drivers

 compilers
 assemblers
 linkers
 utility)

6.  application software)
 word processing) Micosoft Word,
OpenOffice Writer
 spreadsheet) OpenOfficeMicrosoft
Excel, Calc
 presentation) Microsoft Powerpoint,

7. 

8. 

9. 
pager)
Personal Digital
Assistant : PDA)
stylus)


10. 

on
demand


11. 




12.  programmer )
 system analyst
 database administrator)
 system administrator)