how is a computer defined? what is a computer? p. 3 produces and stores results next electronic...
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How is a How is a computercomputer defined? defined?What Is a Computer?What Is a Computer?
p. 3
Produces and stores results
Next
Electronic device operating under the control of instructions stored in its own memory
Processes data into informationinformation
Data that is organized, meaningful, and useful
Accepts datadataRaw facts
Storage Communications
Advantages and Disadvantages Advantages and Disadvantages of Using Computersof Using Computers
p. 5
What are the advantages of using computers?What are the advantages of using computers?
Speed Reliability
Next
Consistency
Advantages and Disadvantages Advantages and Disadvantages of Using Computersof Using Computers
p. 5
What are the disadvantages of using computers?What are the disadvantages of using computers?
Next
Violation ofPrivacy
Impact onEnvironment
Impact onLabor Force
Health Risks
What Is a Computer?What Is a Computer?What is the What is the information processing information processing
cyclecycle??
p. 5 Fig. 1-2 Next
Input Process Output Storage Communication
The Components of a ComputerThe Components of a ComputerWhat is an What is an input deviceinput device??
p. 6 Fig. 1-3
Hardware used to enter dataand instructions
Next
Click to view Web Link,click Chapter 1, Click Web Linkfrom left navigation, then click Input Devices below Chapter 1
The Components of a ComputerThe Components of a ComputerWhat is an What is an output deviceoutput device??
p. 7 Fig. 1-3
Hardware that conveys information to one or morepeople
Next
Click to view Web Link,click Chapter 1, Click Web Linkfrom left navigation, then click Output Devices below Chapter 1
The Components of a ComputerThe Components of a ComputerWhat is the What is the system unitsystem unit??
p. 7 Fig. 1-3 Next
Box-like casecontainingelectroniccomponentsused to processdata
The Components of a ComputerThe Components of a ComputerWhat are two main components on the What are two main components on the
motherboard?motherboard?
p. 7
Central Processing Unit (CPU)Central Processing Unit (CPU)Also called a processor
The electronic component that interprets and carries out the basic instructions that operate the computer
Next
MemoryMemoryConsists of electronic components that store instructions waiting to be executed and data needed by those instructions
The Components of a ComputerThe Components of a ComputerWhat is storage?What is storage?
p. 7
Storage mediaStorage mediaPhysical material on which data, instructions, and information are stored
Storage mediaStorage mediaPhysical material on which data, instructions, and information are stored
Storage deviceStorage deviceRecords and retrieves items to and from a storage medium
Storage deviceStorage deviceRecords and retrieves items to and from a storage medium
Next
Holds data, instructions, and information for future use
The Components of a ComputerThe Components of a ComputerWhat isWhat is storage mediastorage media??
p. 7 Next
Floppy Disks
Memory Cards
DVDs
CDs
Hard Disks
USB Flash Drives
Retrieves(reads)
items from storagemedia
Retrieves(reads)
items from storagemedia
Records (writes)items to storage
media
Records (writes)items to storage
media
The Components of a ComputerThe Components of a ComputerWhat isWhat is a a storage devicestorage device??
p. 7 Next
The Components of a ComputerThe Components of a ComputerWhat is a floppy disk?What is a floppy disk?
p. 7 Next
Thin, circular, flexible disk enclosed in rigid plastic shell
The Components of a ComputerThe Components of a ComputerWhat is a USB flash drive?What is a USB flash drive?
p. 7 Next
Provides much greater storage capacity than a floppy disk
Small and lightweight enough to be transported on a keychain or in a pocket
The Components of a ComputerThe Components of a ComputerWhat is a hard disk?What is a hard disk?
p. 7 Fig. 1-4 Next
Provides greater storage capacity than a floppy disk and USB flash drive
Most are housed inside of the system unit
The Components of a ComputerThe Components of a ComputerWhat is a compact disc?What is a compact disc?
p. 7 Fig. 1-5 Next
Flat, round, portable disc CD Disc DVD Disc
The Components of a ComputerThe Components of a Computer
What is a What is a communications devicecommunications device??
Nextp. 8
Hardware component that enables a computer to
send and receive data, instructions, and information
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
Occurs over cables, telephonelines, cellular radio networks,
satellites, and other transmission media
Click to view Web Link,click Chapter 1, Click Web Linkfrom left navigation, then click Communications Devices below Chapter 1
To shareTo share
Networks and the InternetNetworks and the Internet A A networknetwork is a collection of computers is a collection of computers
and devices connected togetherand devices connected together
p. 8
ResourcesResources
Hardware devices
Hardware devices
Software programs
Software programs
DataData To save time and
money
To save time and
money
InformationInformation
Next
Networks and the InternetNetworks and the InternetWhat is the What is the InternetInternet??
p. 8 Fig. 1-6 Next
Worldwide collection of networks that connects millions of businesses, government agencies, educational institutions, and individuals
Click to view Web Link,click Chapter 1, Click Web Linkfrom left navigation, then click Internetbelow Chapter 1
Networks and the InternetNetworks and the Internet
p. 9 Fig. 1-7
Why do users access the Internet?
2. Information
3. Shopping
4. Banking and Investing
5. Classes
6. Entertainment
Next
1. Communications
7. Download Music
8. Share Information
Networks and the InternetNetworks and the InternetWhat is the What is the WebWeb??
p. 10
A Web site is a collection of
related Web pages
A Web site is a collection of
related Web pages
A Web page contains text, graphics, audio, video, and links to other Web pages
A Web page contains text, graphics, audio, video, and links to other Web pages
You can share information by
creating Web pages or posting photos on
a photo sharingcommunity
You can share information by
creating Web pages or posting photos on
a photo sharingcommunity
Next
Billions of documents, called Web pages, available to anyone connected to the Internet
A podcast is recorded audio
stored on a Web sitethat can be
downloaded
A podcast is recorded audio
stored on a Web sitethat can be
downloadedClick to view Web Link,click Chapter 1, Click Web Linkfrom left navigation, then click Blogs below Chapter 1
Consists of a seriesof instructions thattells the computer
what to do
Consists of a seriesof instructions thattells the computer
what to do
Computer SoftwareComputer SoftwareWhat is What is softwaresoftware??
p. 10 Next
Also called aprogram
Also called aprogram
Computer SoftwareComputer SoftwareWhat is a What is a graphical user interface (GUI)?graphical user interface (GUI)?
p. 10 Fig. 1-8 Next
Allows you to interact with the software using graphics and icons
Controls how you enter data and how the screen displays information
Computer SoftwareComputer SoftwareWhat isWhat is system softwaresystem software??
p. 10 - 11
Operating System (OS)Operating System (OS)is a set of programs that coordinates all activities among computer hardware devices and allows users to run application software
Operating System (OS)Operating System (OS)is a set of programs that coordinates all activities among computer hardware devices and allows users to run application software
Utility ProgramsUtility Programs allow the user to perform maintenance-type tasks usually related to managing a computer, its devices or its programs
Utility ProgramsUtility Programs allow the user to perform maintenance-type tasks usually related to managing a computer, its devices or its programs
Next
Programs that control or maintain the operations of the computer and its devices
Computer SoftwareComputer Software
What isWhat is application softwareapplication software??
p. 11 Fig. 1-9 Next
Presentation Graphics
Spreadsheet
Database
Word Processing
Programs that perform specific tasks for users
Click to view Web Link,click Chapter 1, Click Web Linkfrom left navigation, then click Application Software below Chapter 1
Computer SoftwareComputer SoftwareHow do you How do you installinstall and and runrun programs? programs?
p. 11 - 12 Fig. 1-10 Next
Step 1: INSTALLWhen you insert a greeting card program discin the CD drive for the first time, the computerbegins the procedure of installing the greetingcard program on the hard disk.
Step 3: USEThe greeting card program executes. Using this program, you can create custom greeting cards.
Step 2: RUNOnce installed, you can instruct the computer to run the greeting card program. The computer transfers instructions from the hard disk to memory.
Computer SoftwareComputer Software
What is aWhat is a programmerprogrammer??
p. 12 Fig. 1-11 Next
Someone who developsapplication or system software Programmer writes
the instructions todirect the computer toprocess data intoinformation
Categories of ComputersCategories of Computers
p. 13 Next
What are the categories of computers?Personal Computers
(desktop)
Mobile Computers andMobile Devices
Servers
Mainframes
Supercomputers
Personal ComputersPersonal ComputersWhat are the two most popular series of What are the two most popular series of personal computerspersonal computers??
p. 14 Figs. 1-13–1-14 Next
Click to view Web Link,click Chapter 1, Click Web Link from left navigation, then click Personal Computers below Chapter 1
PC and compatibles use the Windows operating system
Apple Macintosh uses the Macintosh operating system (Mac OS)
Personal ComputersPersonal Computers
What is aWhat is a desktop computerdesktop computer??
p. 14 Fig. 1-13 Next
Designed so all of the components fit on or under a desk or table
Mobile Computers and Mobile Mobile Computers and Mobile DevicesDevices
What is aWhat is a notebook computernotebook computer??
p. 14 - 15 Fig. 1-15 Next
Portable, small enough to fit on your lap
Also called a laptop computer
Generally more expensive than a desktop computer
Mobile Computers and Mobile Mobile Computers and Mobile DevicesDevices
What is aWhat is a Tablet PCTablet PC??
p. 15 Fig. 1-16 Next
Especially useful for taking notes
Resembles a letter-sized slate Allows you to write on the
screen using a digital pen
Mobile Computers and Mobile Mobile Computers and Mobile DevicesDevicesWhat is aWhat is a handheld computerhandheld computer??
p. 15 Next
Used by mobile
employees such as meter readers and
delivery people
Small enough to fit
in one hand
Mobile Computers and Mobile Mobile Computers and Mobile DevicesDevices
What is aWhat is a personal digital assistantpersonal digital assistant (PDA) (PDA)??
p. 15 Fig. 1-17 Next
Provides personal organizer functions Calendar Appointment book Address book Calculator Notepad
Mobile Computers and Mobile Mobile Computers and Mobile DevicesDevices
What areWhat are smart phonessmart phones??
p. 16 Figs. 1-18 Next
A smart phone isan Internet-enabled
telephone that usuallyprovides PDA capabilities
ServersServers
What types of servers are there?What types of servers are there?
p. 16 - 17 Figs. 1-20–1-22
Mainframe Very powerful, expensive computer that supports thousands of computers
Supercomputer The fastest, most powerful, most expensive computer. Used for applications requiring complex mathematical calculations
Next
A server controls access to network resources and provides centralized storage
Computer Applications in Computer Applications in SocietySociety
What are some examples What are some examples of computer applications of computer applications in society?in society?
p. 22-25 Figs. 1-30–1-37 Next
Education Finance Government Healthcare Science Publishing Travel Manufacturing
The computer and its componentsThe computer and its components
What is a network?What is a network?
The Internet and the World Wide Web
The Internet and the World Wide Web
Types of softwareTypes of software
Categories of computersCategories of computers
Computer applications in societyComputer applications in society
Chapter 1 Complete