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Introduction to Computers A World of Computers Next What is computer literacy ? Knowledge and understanding of computers and their uses Computers are everywhere p. 4-5 Fig. 1-1 Important Concepts … computer competency

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Introduction to Computers

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Introduction to computers l.jpg

Introduction toComputers


A world of computers l.jpg

A World of Computers

Next

  • What is computer literacy?

  • Knowledge and understanding of computers and their uses

  • Computers are everywhere

p. 4-5 Fig. 1-1


Important concepts l.jpg

Important Concepts …

  • computer competency

  • To develop the technical skills of using computers applications related to modern business, specifically word processing, electronic spreadsheet, and the Internet, thru an exercise‑oriented approach that allows students to learn by example.

  • information literacy

  • To develop the skill of knowing how to find, analyze, and use information.  To develop the ability to gather information from multiple sources, select the relevant material, and organize it into a form that will allow you to make a decision or take a specific action.


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What Is a Computer?

Processes data into information

Data that is organized, meaningful, and useful

Acceptsdata

Raw facts, figures, and symbols

Produces and stores results

Next

  • How is a computer defined?

  • Electronic device operating under the control of instructions stored in its own memory

p. 6


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What Is a Computer?

Next

  • What is the information processing cycle?

  • Input

  • Process

  • Output

  • Storage

  • Communication

p. 6 Fig. 1-2


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Data/Information Processing Cycle

Input

(data)

Processing

(data = information)

Storage

(information)

Output

(information)


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The Components of a Computer

Next

  • What is an input device?

  • Hardware used

    to enter data

    and instructions

p. 7 Fig. 1-3


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The Components of a Computer

Next

  • What is an output device?

  • Hardware that

    conveys information to one or morepeople

p. 8 Fig. 1-3


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The Components of a Computer

Next

  • What is the system unit?

  • Case

    containing

    electronic

    components

    used to process

    data

p. 8 Fig. 1-3


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The Components of a Computer

Next

  • What are two main components on the motherboard?

Processor

Also called a Central Processing Unit (CPU)

The electronic component that interprets and carries out the basic instructions that operate the computer

Memory

Consists of electronic components that store instructions waiting to be executed and data needed by those instructions

p. 8


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The Components of a Computer

Next

  • What is storage?

  • Holds data, instructions, and information for future use

Storage media

  • Physical material on which data, instructions, and information are stored

Storage device

  • Records and retrieves items to and from storage media

p. 8


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The Components of a Computer

Next

  • What is a floppy disk and USB flash drive?

  • Floppy Disk

    • Thin, circular, flexibledisk enclosed in a square-shaped plastic shell

    • Stores up to about 1.4million characters

  • USB Flash Drive

    • Provides much greater storage capacity than a floppy disk or Zip® disk

    • Small and lightweightenough to be transportedon a keychain or in apocket

p. 8


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The Components of a Computer

Next

  • What is a hard disk?

  • Provides greater storage capacity than a floppy disk, Zip disk, or USB flash drive

  • Most are housed inside of the system unit

p. 8 Fig. 1-4


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The Components of a Computer

Next

  • What is a compact disc?

  • Flat, round, portable metal disc

  • CD-ROM

  • DVD-ROM

p. 9 Fig. 1-5


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The Components of a Computer

Next

  • What is a communications device?

Hardware component that enables a computer to send and receive data, instructions, and information

Occurs over cables, telephonelines, cellular radio networks,satellites, and other transmission media

p. 9


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Advantages and Disadvantages of Using Computers

Reliability

Speed

Consistency

Storage

Communications

Next

  • What are the advantages of using computers?

p. 10


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Advantages and Disadvantages of Using Computers

Next

  • What are the disadvantages of using computers?

Violation ofPrivacy

Impact onLabor Force

Health Risks

Impact onEnvironment

p. 10 - 11


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Networks and the Internet

Next

  • What is a network?

  • Collection of computers and devices connected together

Used to share

Resources

Hardware devices

Software programs

Saves time and money

Data

Information

p. 11


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Networks and the Internet

Next

  • What is a server?

  • A server manages the resources on a network

  • Clients access the resources on the server

p. 11 Fig. 1-6


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Networks and the Internet

Next

  • What is the Internet?

  • Worldwide collection of networks that connects millions of businesses, government agencies, educational institutions, and individuals

p. 12 Fig. 1-7


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Networks and the Internet

Next

  • Why do users access the Internet?

  • Communication

  • Information

  • Shopping

  • Banking and Investing

  • Classes

  • Entertainment

7.Download Music

8.Share Information

p. 12-13 Fig. 1-8


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Networks and the Internet

Next

  • What is the Web?

  • Billions of documents, called Web pages, available to anyone connected to the Internet

A Web site is a collection of related Web pages

You can share information by creating Web pages or posting photos on a photo sharingcommunity

A podcast is recorded audio stored on a Web sitethat can bedownloaded

A Web page contains text, graphics, audio, video, and links to other Web pages

A blog consists of time-stamped articles ina journal format

p. 12 - 14


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Computer Software

Next

  • What is software?

Consists of a seriesof instructions thattells the computerwhat to do

Also called aprogram

p. 15


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Computer Software

Next

  • What is a graphical user interface (GUI)?

  • Allows you to interact with the software using graphics and icons

  • Controls how you enter data and how the screen displays information

p. 15 Fig. 1-10


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Computer Software

Next

  • What issystem software?

  • Programs that control or maintain the operations of the computer and its devices

Operating System (OS)is a set of programs that coordinates all activities among computer hardware devices and allows users to run application software

Utility Programsallow the user to perform maintenance-type tasks usually related to managing a computer, its devices or its programs

p. 15-16


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Computer Software

Next

  • What isapplication software?

  • Programs that perform specific tasks for users

Word Processing

Spreadsheet

Database

Presentation Graphics

p. 16 Fig. 1-11


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Computer Software

Step 1: INSTALL

When you insert a greeting card program disc

in the CD drive for the first time, the computer

begins the procedure of installing the greeting

card program on the hard disk.

Step 2: RUN

Once installed, you can instruct the computer to run the greeting card program. The computer transfers instructions from the hard disk to memory.

Step 3: USE

The greeting card program executes. Using this program, you can create custom greeting cards.

Next

  • How do you install and run programs?

p. 17 Fig. 1-12


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Computer Software

JavaScript

Web application

Next

  • What is aprogrammer?

  • Someone who developsapplication or system software

  • Programmer writesthe instructions todirect the computer toprocess data intoinformation

p. 18 Fig. 1-13


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Categories of Computers

Next

What are the categories of computers?

Personal Computers(desktop)

Mobile Computers andMobile Devices

Game Consoles

Servers

Mainframes

Supercomputers

Embedded Computers

p. 19


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Personal Computers

  • Apple Macintosh uses the Macintosh operating system (Mac OS)

  • PC and compatibles use the Windows operating system

Next

  • What are the two most popular series of personal computers?

p. 19 Figs. 1-15–1-16


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Personal Computers

Next

  • What is adesktop computer?

  • Designed so all of the components fit entirely on or under a desk or table

p. 19-20 Fig. 1-15


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Mobile Computers and Mobile Devices

Next

  • What is anotebook computer?

  • Portable, small enough to fit on your lap

  • Also called a laptop computer

  • Generally more expensive than a desktop computer

p. 20 Fig. 1-17


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Mobile Computers and Mobile Devices

Next

  • What is aTablet PC?

  • Resembles a letter-sized slate

  • Allows you to write on the screen using a digital pen

  • Especially useful for taking notes

p. 21 Fig. 1-18


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Mobile Computers and Mobile Devices

Next

  • What are mobile devices?

Small enough tocarry in a pocket

Internet-enabledtelephone is a“smart telephone”

p. 21


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Mobile Computers and Mobile Devices

Small enough to fit in one hand

Used by mobile employees such as meter readers and delivery people

Next

  • What is ahandheld computer?

p. 21


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Mobile Computers and Mobile Devices

Next

  • What is apersonal digital assistant (PDA)?

  • Provides personal organizer functions

    • Calendar

    • Appointment book

    • Address book

    • Calculator

    • Notepad

p. 21 Fig. 1-20


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Mobile Computers and Mobile Devices

A smart phone isan Internet-enabledtelephone that usuallyprovides PDA capabilities

Next

  • What aresmart phones?

p. 22 Fig. 1-21


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Game Consoles

Mobile computing device designed for single-player or multiplayer video games

Next

  • What aregame consoles?

p. 22 Fig. 1-21


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Servers

Next

  • What types of servers are there?

A server controls access to network resources and provides centralized storage

MainframeVery powerful, expensive computer that supports thousands of computers

SupercomputerThe fastest, most powerful, most expensive computer. Used for applications requiring complex mathematical calculations

p. 23 Figs. 1-23–1-25


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Embedded Computers

Next

  • What is an embedded computer?

  • A special-purpose computer that functions as a component in a larger product

p. 24 Fig. 1-26


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Elements of an Information System

Next

  • What are information system elements?

  • Hardware

  • Software

  • Data

  • People

  • Procedures

p. 25 Fig. 1-27


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Examples of Computer Usage

Next

  • What software is available for a home user?

  • Personal finance management

  • Web access

  • Communications

  • Entertainment

p. 26-27 Fig. 1-28


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Examples of Computer Usage

Next

  • What software is available for a small office/home office (SOHO) user?

  • Productivity software

  • Specialty software

  • Web usage

  • E-mail

p. 28 Fig. 1-30


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Examples of Computer Usage

Next

  • What is available for a mobile user?

  • Hardware

    • Notebook computers

    • PDAs

    • Smart phones

    • Tablet PCs

  • Software

    • Word processing

    • Spreadsheet

    • Presentation graphicssoftware

p. 29 Fig. 1-31


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Examples of Computer Usage

Next

  • What are the needs of a power user?

  • Speed and large amounts of storage

  • Types of power users

  • Engineers

  • Scientists

  • Architects

  • Desktop publishers

  • Graphic artists

p. 29 Fig. 1-32


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Examples of Computer Usage

Next

  • What are the needs of the large business user?

  • Payroll

  • Inventory

  • E-commerce

  • Desktop publishing

p. 30 Figs. 1-33–1-34


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Computer Applications in Society

Next

  • What are some examples of computer applications in society?

  • Education

  • Finance

  • Government

  • Healthcare

  • Science

  • Publishing

  • Travel

  • Manufacturing

p. 32-36 Figs. 1-36–1-43


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