Introduction to Computers

Revison on Computer Appreciation.

Computer Literacy

•Have basic understanding of what computer can/cannot do
•Can use computers for personal or professional usage
•Can interact with computers and use software such as word processor, database, spreadsheet and others
•Have some ideas about social implications by current and future computer technology


Computer Areas

•General business
•Bank
•Education
•Government
•Military
•Medical
•Games

What is a Computer?

•A machine that can be programmed to accept data, process it into useful information, and store it away
–Data : raw facts representing people and events
–Information : data that is organized, meaningful, and useful

Computer System

• Hardware
• Software
• Human

Computing Environment

•Personal Computer (PC) environment
•Time Sharing environment
•Client/Server environment
•Distributed Computing

Why Programming?

•A program (software) is a set of detailed, step-by-step instructions that directs the computer to do what you want it to do.
•Programs are written in a programming language – a set of rules that provides a way of telling the computer what operations to perform

Computer Languages

•Machine Language
•Assembly Language
•High-level Language
•Very High-Level Language
•Natural Language