CHAPTER 3 - BASIC CONCEPTS OF INFORMATION TECHNOLOGY

What is Computer


- Computer is an electronic device for access data (input),process data,store data, and produce results (output) according to a lists intruction
- A program is a set of instructions 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.

Information Technology are Everywhere


-Medicine
-Science
-Agriculture
-Entertainment
-Paperwork
-Home
-Education
-Graphics
-Desk Top publishing