CHAPTER 2 - INTRODUCTION TO COMPUTER APPLICATION

Operating System
• Means a master control of all computer’s activities and systems.








• Function of OS:
- User Interface
- Job Management
- Task Management
- Data Mangement
- Device Management
- Security
- Command OS.
Application software
Such as Microsoft Office, Internet Explorer, Winamp.

Anti-Virus
• Is a computer program that attempt to identify, neutralize software
• Example of anti-virus software:
- Kaspersky
- Norton
- Nod32
- Eset32
- McAfee

CHAPTER 1 - BASIC CONCEPTS OF IT

What is Computer ?
• Computer is an electronic device for access data (input), process data, store data, and
produce result (output) according to a list of instructions.
• A program is a set of instruction that tell computer what to do.









What is Information Technology ?
• All form of processing, storing, and transmitting information in electronic form. Example of
physical equipment; fax, scanner, computer etc.
• IT is a use of software to convert, store, protect, transmit and retrieve information.










Evolution of Computing Technology


• 1ST Generation (1946-1958): The Vacuum Tubes Years – ENIAC invented by Presper Eckert and John Mauchly










• 2nd Generation(1959-1964): The Era Of The Transistor – AT&T’s Bell Labs working for replace the use of vacuum tubes with transistor.

• 3rd Generation (1965-1970): Integrated Circuit – referred to semiconductor chip, pack of huge of transistor onto single wafer silicon.











• 4th Generation (1971-Today): The Microprocessor – referred to a millions of transistor put onto a integrated circuit chip and the invention of microprocessor.