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Computer Applications in Modern day society(Internet and WWW)
CEN 100 Week 2.Raju.MULLAGIRI
04/10/2023Copyright © 2012 Pearson Education.
2
Used to shareUsed to share
A network is a collection of computers and devices connected together
Networks and the Internet
ResourcesResources
Hardware devices
Hardware devices
Software programs
Software programs
DataData To save time and
money
To save time and
money
InformationInformation
Next
04/10/2023Copyright © 2012 Pearson Education.
3
What is the Internet [DoD – 1969]?
Networks and the Internet
Next
Worldwide collection of networks that connects millions of businesses, government agencies, educational institutions, and individuals
04/10/2023Copyright © 2012 Pearson Education.
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Networks and the InternetWhy do users access the Internet (1969)?
2. Information
3. Shopping
4. Banking and Investing
5. Classes
6. Entertainment
Next
1. Communications
7. Download Music
8. Share Information
04/10/2023Copyright © 2012 Pearson Education.
5
What is the Web (1989)? Networks and the Internet
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
Difference between the Internet and the WWW
04/10/2023Copyright © 2012 Pearson Education.
6
What are the two most popular series of personal computers?
Personal Computers
Next
Apple Macintosh usually uses the Macintosh operating system (Mac OS X)
PC and compatibles use the Windows operating system
04/10/2023Copyright © 2012 Pearson Education.
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What is a desktop computer?Personal Computers
Next
Designed so all of the components fit on or under a desk or table
04/10/2023Copyright © 2012 Pearson Education.
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What is a notebook computer?
Mobile Computers and Mobile Devices
Next
Portable, small enough to fit on your lap
Also called a laptop computer
Generally more expensive than desktop computers with equal capabilities
04/10/2023Copyright © 2012 Pearson Education.
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What is a Tablet PC?
Mobile Computers and Mobile Devices
Next
Especially useful for taking notes
Resembles a letter-sized slate Allows you to write on the
screen using a digital pen
Can you say UPS, FEDEX, DHL?
04/10/2023Copyright © 2012 Pearson Education.
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What is a handheld computer?
Mobile Computers and Mobile Devices
Next
Sometimes referred to as an ultra-personal
computer (uPC), or an Ultra-Mobile PC
(UMPC), or a handtop computer
Small enough to fit
in one hand
iPad, etc. !!
04/10/2023Copyright © 2012 Pearson Education.
11
What is a personal digital assistant (PDA)?
Mobile Computers and Mobile Devices
Next
Provides personal organizer functions Calendar Appointment book Address book Calculator Notepad
04/10/2023Copyright © 2012 Pearson Education.
12
What are smart phones?
Mobile Computers and Mobile Devices
Next
A smart phone isan Internet-enabled
telephone that usuallyprovides PDA capabilities
Like the iPhone, Treo, Android (‘Droid) etc.
04/10/2023Copyright © 2012 Pearson Education.
13
What are game consoles?
Game Consoles
Next
Mobile computing device designed for single-player or multiplayer video games
Like the Xbox, Wii, Sony PlayStation3
04/10/2023Copyright © 2012 Pearson Education.
14
What types of servers are there?
Servers
Mainframe Very powerful, expensive computer that supports thousands of connected users[Also called an Enterprise Server]
Supercomputer The fastest, most powerful, most expensive computer. Used for applications requiring complex mathematical calculations
Next
Server Controls access to network resources and provides centralized storage
04/10/2023Copyright © 2012 Pearson Education.
15
What is an embedded computer?
Embedded Computers
A special-purpose computer that functions as a component in a larger product
Next
04/10/2023Copyright © 2012 Pearson Education.
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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
What is software?
Computer Software
Next
Also called aprogram
& DATA
Also called aprogram
& DATA
04/10/2023Copyright © 2012 Pearson Education.
17
What is a graphical user interface (GUI)?
Computer Software
Next
Allows you to interact with the software using graphics and visual images such as icons
Controls how you enter data and instructions and how the screen displays information
04/10/2023Copyright © 2012 Pearson Education.
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What is system software?
Computer Software
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
04/10/2023Copyright © 2012 Pearson Education.
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What is application software?
Computer Software
Next
Presentation Graphics
Spreadsheet
Database
Word Processing
Programs designed to make users more productive
Create/Produce useful data
04/10/2023Copyright © 2012 Pearson Education.
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How do you install and run programs?
Computer Software
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 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: USEThe greeting card program executes. Using this program, you can create custom greeting cards.
04/10/2023Copyright © 2012 Pearson Education.
21
What is a programmer?
Computer Software
Next
Someone who developsapplication or system software Programmer writes
the instructions todirect the computer toprocess data intoinformation
04/10/2023Copyright © 2012 Pearson Education.
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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
04/10/2023Copyright © 2012 Pearson Education.
23
What software is available for a home user? Personal Finance Management Web access Communications Entertainment (Games)
Examples of Computer Usage
Next
04/10/2023Copyright © 2012 Pearson Education.
24
What software is available for a small office/home office (SOHO) user?
Examples of Computer Usage
Productivity software Specialty software Web usage E-mail (Games)
Next
04/10/2023Copyright © 2012 Pearson Education.
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Hardware Notebook computers Tablet PCs Internet-enabled PDAs Smart phones
What is available for a mobile user?
Examples of Computer Usage
Software Word processing Spreadsheet Presentation graphics
software
Next
04/10/2023Copyright © 2012 Pearson Education.
26
What are the needs of a power user?
Examples of Computer Usage
Next
Extremely fast processors Types of power users
Engineers Scientists Architects Desktop publishers Graphic artists
04/10/2023Copyright © 2012 Pearson Education.
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What are the needs of the large business user?
Examples of Computer Usage
Next
Payroll Inventory E-commerce Desktop publishing
04/10/2023Copyright © 2012 Pearson Education.
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What are some examples of computer applications in society?
Computer Applications in Society
Next
Education Finance Government Health Care Science Publishing Travel Manufacturing
04/10/2023
Web-based applications◦Internet messaging (IM)—free, real-time
connection Two or more parties can use a buddy list to
identify and restrict the contacts the person wishes to communicate with
◦Social networks—include Facebook, MySpace, LinkedIn, and Twitter
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Computers, Society, and You
04/10/2023
Collaborative work◦ Computer forensics—branch of forensic science
that deals with legal evidence found on computers, and is used to find and apprehend criminals
◦ Collaborative software includes: Google Docs—free Web-based word processor and
spreadsheet Wiki—collection of Web pages designed to let
anyone with access contribute or modify content Google Groups—free service that helps users
connect, share information, and communicate effectively over the Web
Copyright © 2012 Pearson Education. 30
Computers, Society, and You
04/10/2023
Advantages and Disadvantages of Computer Use
Copyright © 2012 Pearson Education. 31
Computers, Society, and You
04/10/2023
When using computer hardware:◦ Do not plug too many devices into electrical
outlets.◦ Use surge protectors.◦ Place hardware where it can’t fall or be
damaged.◦ Provide adequate space for air circulation
around hardware.◦ Securely fasten computer cables, cords,
and wires.Copyright © 2012 Pearson
Education. 32
Computers, Society, and You
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Ergonomics—field of study concerned with the fit between people and their work environment
Carpal tunnel syndrome (repetitive strain injury or cumulative trauma disorder)—caused by repeated motions that damage nerves in hands, wrists, and arms
Copyright © 2012 Pearson Education. 33
Computers, Society, and You
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Promote safety and comfort◦ Position top of your monitor at eye level◦ Tilt the monitor back 10 to 20 degrees◦ Place it at least 20” from your eyes◦ Keep your wrists flat—use a wrist rest if needed◦ Rest your eyes often by focusing on an object
20 or more feet away◦ Stand and stretch periodically
Copyright © 2012 Pearson Education. 34
Computers, Society, and You
04/10/2023
Software programs◦Contain flaws
Errors cause programs to run slowly or miscalculate.
Bugs are almost impossible to eliminate completely.
Copyright © 2012 Pearson Education. 35
Computers, Society, and You
04/10/2023
Computer ethics◦Moral dilemmas relating to computer
usageDigital piracy
◦ Unauthorized reproduction and distribution of computer-based media
Unethical behavior◦ Sending viruses, stealing credit card
information, computer stalking, and installing illegitimate copies of software on computers
Copyright © 2012 Pearson Education. 36
Computers, Society, and You
04/10/2023
Computers provide those who are disabled and disadvantaged with added support and opportunities
E-learning◦ Learning without requiring students to be at
a specific location at a specific time
Copyright © 2012 Pearson Education. 37
Computers, Society, and You
04/10/2023
Automation◦Replacement of people by machines and
computersOutsourcing
◦ Subcontracting of portions of a job to a third party to reduce cost, time, and energy.
Computer technology◦ Aided globalization and the resulting
outsourcing of jobs, as well as structural unemployment—the obsolescence of certain jobs.
Copyright © 2012 Pearson Education. 38
Computers, Society, and You
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Be a responsible computer user:◦Understand how your computer use
affects others.◦Obey laws and conform to requests
regarding use of cell phones.◦Be aware of e-waste and the proper
disposal of outdated computer hardware.
Copyright © 2012 Pearson Education. 39
Computers, Society, and You
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