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Introduction to computer

Chapter 1- week 1

Tan Swee Ting

on 7 October 2012

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Transcript of Introduction to computer

Introduction to Computing Lesson 1 What is a computer? A computer is an electronic device, operating under the control of instructions stored in its own memory Collect data
(input) Processing Produces Information
(Output) Component of Computer A computer contains many electric, electronic, and mechanical components known as hardware 1) Input devices
2) Output devices
3) System unit
4) Storage device
5) Communications 6 Different Hardware Hardware: Definition: Allows you to enter data and
instructions into a computer 1)Input device 2) Output device Hardware component that conveys
information to one or more people 3)System unit Case that contains the electronic components of the computer that are used to process data 4)Storage device Hardware: Definition: Holds data, instructions, and information for future use 5) Communications
device Enables a computer to send and receive data, instructions, and information to and from one or
more computers or mobile devices Advantages of Using Computers:

Communication Advantages and Disadvantages of Using Computers Disadvantages of Using Computers:

Violation of Privacy
Public safety
Impact on labor force
Health risk
Impact on enviroment Green computing involves reducing the electricity consumed and environmental
waste generated when using a computer
Strategies include:
Regulating manufacturing processes
Extending the life of computers
Immediately donating or properly
disposing of replaced computers Network & Internet A network is a collection of computers and devices connected together, often wirelessly, via communications devices and transmission media

The Internet is a worldwide collection of networks that connects millions of businesses, government agencies, educational institutions, and individuals Network & internet A social networking Web site encourages members to share their interests, ideas, stories, photos, music, and videos with other registered users

Also called an online social network Computer SOFTWARE Software, also called a program, tells the computer what tasks to perform and how to perform them System software:
Operating system
Utility Program Computer software Installing is the process of setting up software to work with the computer, printer, and other hardware A programmer develops software or writes the instructions that direct the computer to process data into information Soft ware Personal computers A personal computer can perform all of its input, processing, output, and storage activities by itself

Two popular architectures
are the PC and the Apple A game console is a mobile computing device designed for single-player or multiplayer video games Game Console A server controls access to the hardware, software, and other resources on a network

-Provides a centralized storage area for programs, data, and information Server Mainframe A mainframe is a large, expensive, powerful computer that can handle hundreds or thousands of connected users simultaneously Super computer A supercomputer is the fastest, most powerful computer

-Fastest supercomputers are capable of processing more than one quadrillion instructions in a single second Embedded computers An embedded computer is a special-purpose computer that functions as a component in a larger product Home User

Personal financial management
Web access
Entertainment Examples of Computer Usage Small Office/ Home Office User

Look up information
Send and receive e-mail messages
Make telephone calls Power User

Work with multimedia
Use industry-specific software Mobile User

Connect to computers on
network or the Internet
Transfer information
Play video games
Listen to music
Watch movies Enterprise User

Communicate among employees
Process high volumes of transactions
Blog Computer Applications in Society 1)Government 2) 3) 4) Healthcare 5) Travel 6) 7) 8) Manufacturing END!!!!! :)
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