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introduction to computer by Mind Map: introduction to computer
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introduction to computer

A World of Computers

Computers are everywhere

Objectives Overview

Explain why computer literacy is vital to success in today’s world

Define the term, computer, and describe the relationship between data and information

Describe the five components of a computer

Discuss the advantages and disadvantages that users experience when working with computers

Define the term, network, and identify benefits of sharing resources on a network

Discuss the uses of the Internet and World Wide Web

Distinguish between system software and application software

Differentiate among types, sizes, and functions of computers in each category

Describe the role of each element in an information system

Explain how home users, small office/home office users, mobile users, power users, and enterprise users each interact with computers

Discuss how society uses computers in education, finance, government, health care, science, publishing, travel, and manufacturing

What Is a Computer?

• A computer is an electronic device, operating under the control of instructions stored in its own memory

Information Processing Cycle, Collects data (input), Processing, Produces information (output)

The Components of a Computer

A computer contains many electric, electronic, and mechanical components known as hardware

Input Device, Allows you to enter data and instructions Input Device into a computer

Output Device, Hardware component that conveys information to one or more people

System Unit, Case that contains the electronic components of the computer that are used to process data

Storage Device, Holds data, instructions, and information for future use

Communications Device, Enables a computer to send and receive data, instructions, and information to and from one or more computers or mobile devices

Advantages and Disadvantages of Using Computers

Advantages of Using Computers

Speed

Reliability

Consistency

Storage

Communications

Disadvantages of Using Computers

Health Risks

Violation of Privacy

Public Safety

Impact on Labor Force

Impact on Environment

Green computing

involves reducing the electricity consumed and environmental waste generated when using a computer

Strategies include:

– Recycling

– Regulating manufacturing processes

– Extending the life of computers

– Immediately donating or properly disposing of replaced computers

Networks and the 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

People use the Internet for a variety of reasons

Communicate

Research and Access Information

Shop

Bank and Invest

Online Trading

Entertainment

Download Music

Share Videos

Web Application

A social networking Web site encourages members to share their interests, ideas, stories, photos, music, and videos with other registered users

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

Application 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

Categories of Computers

Personal computers

Mobile computers and mobile devices

Game consoles

Servers

Mainframes

Supercomputers

Embedded computers

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 – Desktop computer

Mobile Computers and Mobile Devices

Mobile Computer

Examples include notebook computers, laptop computers, and Tablet PCs

Mobile Device

Examples include smart phones, PDAs, handheld computers, portable media players, and digital cameras

Mobile Computers and Mobile Devices

Notebook computer

Tablet PC

Smart phone

PDA

Handheld computer

Portable media player

Digital camera

Game Consoles

A game console is a mobile computing device designed for single-player or multiplayer video games

Servers

A server controls access to the hardware, software, and other resources on a network Provides – a centralized storage area for programs, data, and information

Mainframes

A mainframe is a large, expensive, powerful computer that can handle hundreds or thousands of connected users simultaneously

Supercomputers

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

Consumer Electronics •Mobile and digital telephones • Digital televisions • Cameras • Video recorders • DVD players and recorders • Answering machines

Home Automation Devices • Thermostats • Sprinkling systems • Security monitoring systems • Appliances • Lights

Automobiles • Antilock brakes • Engine control modules • Airbag controller • Cruise control

Process Controllers and Robotics • Remote monitoring systems • Power monitors •Machine controllers •Medical devices

Computer Devices and Office Machines • Keyboards • Printers • Faxes • Copiers

Elements of an Information System

Hardware

Software

Data

People

Procedures

Examples of Computer Usage

Home User • Personal financial management •Web access • Communications • Entertainment

Small Office/Home Office User • Look up information • Send and receive e-mail messages •Make telephone calls

Mobile User • Connect to other computers on a network or the Internet • Transfer information • Play video games • Listen to music •Watch movies

Power User • Work with multimedia • Use industry-specific software

Enterprise User • Communicate among employees • Process high volumes of transactions • Blog

Computer Applications in Society

Education

Finance

Government

Health Care

Science

Publishing

Travel

Manufacturing

Summary

Basic computer concepts

Components of a computer

Networks, the Internet, and computer software

Many different categories of computers, computer users, and computer applications in society

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