Discovering Computers 2008 Fundamentals Fourth Edition Chapter 3 Application Software.
Living in a Digital World Discovering Computers Fundamentals, 2010 Edition.
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Transcript of Living in a Digital World Discovering Computers Fundamentals, 2010 Edition.
Living in a Digital World
Discovering Computers Fundamentals,
2010 Edition
How is a computer defined?
What Is a Computer?
p. 3 - 4
Produces and stores results
Next
Electronic device operating under the control of instructions stored in its own memory
Processes data into information
Conveys meaning and isuseful to people
Accepts dataCollection of unprocessed items
35
What Is a Computer?
How is a computer defined? Electronic device that Accepts data and instructions
(INPUT) Manipulates (executes)
instructions (PROCESSING) Produces results/information
(OUTPUT) Stores results (STORAGE) Communicates with other
computers (COMMUNICATION)
Referred to as the information processing cycle
INPUT
PROCESS
OUTPUT
STORAGENext
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The Components of a Computer
What is an input 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 Computer
What is an output device?
p. 6 - 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 Computer
What is the system unit?
p. 6 - 7 Fig. 1-3 Next
Case containingelectroniccomponents of the computer that are used to process data
The Components of a Computer
What are two main components on the motherboard?
p. 7
ProcessorAlso called a Central Processing Unit (CPU)
The electronic component that interprets and carries out the basic instructions that operate the computer
Next
MemoryConsists of electronic components that store instructions waiting to be executed and data needed by those instructions
The Components of a Computer
What is storage?
p. 7 Next
Holds data, instructions, and information for future use
The Components of a Computer
What is storage media?
p. 7 Next
USB Flash Drives
Memory Cards DVDs
CDsHard Disks
Storage mediaPhysical material on which data, instructions, and information are stored
Storage mediaPhysical material on which data, instructions, and information are stored
The Components of a Computer
What is a storage device?
p. 7 Next
Retrieves(reads)
items from storagemedia
Retrieves(reads)
items from storagemedia
Records (writes)items to storage
media
Records (writes)items to storage
media
Often functionas a source
of input
Often functionas a source
of input
Storage deviceRecords and retrieves items to and from a storage medium
Storage deviceRecords and retrieves items to and from a storage medium
The Components of a Computer
What is a communications 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
Used to shareUsed to share
Networks and the Internet
A network is a collection of computers and devices connected together, often wirelessly
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 Internet
What is the Internet?
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 Internet
What is the Web?
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 on a socialnetworking Web site
You can share information on a socialnetworking Web site
Next
Billions of documents, called Web pages, available to anyone connected to the Internet
A blog consists of time-stamped articles in
a journal format
A blog consists of time-stamped articles in
a journal format
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
downloaded
Click to view Web Link,click Chapter 1, Click Web Linkfrom left navigation, then click Sharing Videos below Chapter 1
Consists of a seriesof instructions thattells the computer
what to do andhow to do it
Consists of a seriesof instructions thattells the computer
what to do andhow to do it
Computer Software
What is software?
p. 10 Next
Also called aprogram
Also called aprogram
Computer Software
What is system software?
p. 10 - 11
Operating System (OS)is a set of programs that coordinates all activities among computer hardware devices
Operating System (OS)is a set of programs that coordinates all activities among computer hardware devices
Utility Programs allow the user to perform maintenance-type tasks usually related to managing a computer, its devices or its programs
Utility 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
Click to view Web Link,click Chapter 1, Click Web Linkfrom left navigation, then click Windows Vista below Chapter 1
Computer Software
What is application software?
p. 11 Fig. 1-9 Next
Presentation Graphics
Spreadsheet
Database
Word Processing
Programs designed to make users more productive
Personal Computers
What are the two most popular series of personal 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 usually uses the Macintosh operating system (Mac OS X)
Mobile Computers and Mobile DevicesWhat is a notebook 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 desktop computers with equal capabilities
Mobile Computers and Mobile DevicesWhat is a Tablet 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 DevicesWhat is a personal digital assistant (PDA)?
p. 15 Fig. 1-17 Next
Provides personal organizer functions Calendar Appointment book Address book Calculator Notepad
Mobile Computers and Mobile DevicesWhat are smart phones?
p. 16 Figs. 1-18 Next
Click to view Web Link,click Chapter 1, Click Web Link from left navigation, then click iPhone below Chapter 1
A smart phone isan Internet-enabled
telephone that usuallyprovides PDA capabilities
Game Consoles
What are game consoles?
p. 16 Fig. 1-19 Next
Mobile computing device designed for single-player or multiplayer video games
Servers
What types of servers are there?
p. 16 - 17 Figs. 1-20–1-22
Mainframe Very powerful, expensive computer that supports thousands of connected users
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
Embedded Computers
What is an embedded computer? A special-purpose computer that functions as a
component in a larger product
p. 17 - 18 Fig. 1-23 Next
Hardware Notebook computers Tablet PCs Internet-enabled PDAs Smart phone
Examples of Computer Usage
What is available for a mobile user?
p. 20 - 21 Fig. 1-26
Software Word processing Spreadsheet Presentation graphics
software
Next
Examples of Computer Usage
What are the needs of a power user?
p. 21 Fig. 1-27 Next
Extremely fast processors Types of power users
Engineers Scientists Architects Desktop publishers Graphic artists
Examples of Computer Usage
What are the needs of the large business user?
p. 21 - 22 Figs. 1-28–1-29 Next
Payroll Inventory E-commerce Desktop
publishing
Computer Applications in SocietyWhat are some examples of computer applications in society?
p. 22-25 Figs. 1-30–1-37 Next
Education Finance Government Health Care Science Publishing Travel Manufacturing
Click to view Web Link, click Chapter 1, Click Web Link from left navigation, then click Handheld Navigation Devices below Chapter 1
Summary of Introduction to Computers
The computer and its componentsThe computer and its components
What is a network?What is a network?
The InternetThe Internet
Types of softwareTypes of software
Categories of computersCategories of computers
Types of computer usersTypes of computer users
Computer applications in societyComputer applications in society
Chapter 1 Complete
