Computer applications in_modern_day_society

CEN 100 Week 2.
Raju.MULLAGIRI

 A network is a collection of computers and
devices connected together

Used to share

Resources
Hardware
devices Software
programs To save
Data
Information time
and
money

Copyright © 2012 Pearson Next
Education. 12/5/2012 2

What is the Internet [DoD – 1969]?
 Worldwide collection of networks that connects
millions of businesses, government agencies,
educational institutions, and individuals


Why do users access the Internet (1969)?

1. Communications
2. Information
3. Shopping
4. Banking and Investing
5. Classes
6. Entertainment
7. Download Music
8. Share Information


What is the Web (1989)?
 Billions of documents, called Web pages, available to
anyone connected to the Internet
A podcast is
A Web site is You can share recorded audio
a collection of information on a social stored on a Web site
related Web pages networking Web site that can be
downloaded

A Web page contains
A blog consists of time-
text, graphics, audio, stamped articles in
video, and links to a journal format
other Web pages

Difference between the Internet and the WWW

What are the two most popular series of personal
computers?
 Apple Macintosh
 PC and compatibles
usually uses the
use the Windows
Macintosh operating
operating system
system (Mac OS X)


What is a desktop computer?
 Designed so all of the components fit on or under
a desk or table


What is a notebook computer?
 Portable, small enough
to fit on your lap
 Also called a laptop
computer
 Generally more
expensive than desktop
computers with equal
capabilities


What is a Tablet PC?

 Resembles a letter-sized slate
 Allows you to write on the
screen using a digital pen
 Especially useful for taking
notes

Can you say UPS, FEDEX, DHL?


What is a handheld computer?

Small
enough to fit
in one Sometimes referred to
hand as an ultra-personal
computer (uPC), or an
Ultra-Mobile PC
(UMPC), or a handtop
iPad, etc. !!
computer

Education. 12/5/2012 10

What is a personal digital assistant (PDA)?
 Provides personal organizer functions
 Calendar
 Appointment book
 Address book
 Calculator
 Notepad

Education. 12/5/2012 11

What are smart phones?

A smart phone is
an Internet-enabled
telephone that usually
provides PDA capabilities

Like the iPhone, Treo,
Android (‘Droid) etc.

Education. 12/5/2012 12

What are game consoles?
Mobile computing device designed for single-
player or multiplayer video games

Like the Xbox, Wii,
Sony PlayStation3

Education. 12/5/2012 13

What types of servers are there?

Server Controls access to network
resources and provides centralized
storage
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
Education. 12/5/2012 14

What is an embedded computer?
 A special-purpose computer that functions as a
component in a larger product

Education. 12/5/2012 15

What is software?

Consists of a series
Also called a
of instructions that
program
tells the computer
what to do and
& DATA
how to do it

Education. 12/5/2012 16

What is a graphical user interface (GUI)?
 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
Education. 12/5/2012 17

What is system 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 Utility Programs allow the user to
devices perform maintenance-type tasks
usually related to managing a
computer, its devices or its programs

Education. 12/5/2012 18

What is application software?

 Programs designed to make
users more productive
 Create/Produce useful data

Word
Spreadsheet
Processing

Presentation
Database
Graphics

Education. 12/5/2012 19

How do you install and run programs?
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
Step disk.
hard 3: USE Step 2: RUN
The greeting card program Once installed, you can
executes. Using this instruct the computer to
program, you can create run the greeting card
custom greeting cards. program. The computer
transfers instructions
from the hard disk to
memory.

Education. 12/5/2012 20

What is a programmer?
 Someone who develops
application or system
software
 Programmer writes
the instructions to
direct the computer to
process data into
information

Education. 12/5/2012 21

What are the categories of computers?
Personal Computers
(desktop)
Mobile Computers and
Mobile Devices

Game Consoles

Servers

Mainframes

Supercomputers

Embedded Computers
Education. 12/5/2012 22

What software is available for a home user?
 Personal Finance Management
 Web access
 Communications
 Entertainment
 (Games)

Education. 12/5/2012 23

What software is available for a small
office/home office (SOHO) user?
 Productivity software
 Specialty software
 Web usage
 E-mail
 (Games)

Education. 12/5/2012 24

What is available for
a mobile user?
 Hardware
 Notebook computers
 Tablet PCs
 Internet-enabled PDAs
 Smart phones
 Software
 Word processing
 Spreadsheet
 Presentation graphics
software

Education. 12/5/2012 25

What are the needs of a power user?

 Extremely fast processors
 Types of power users

 Engineers
 Scientists
 Architects
 Desktop publishers
 Graphic artists

Education. 12/5/2012 26

What are the needs of the large business user?

 Payroll
 Inventory
 E-commerce
 Desktop publishing

Education. 12/5/2012 27

What are some examples
of computer applications
in society?
 Education
 Finance
 Government
 Health Care
 Science
 Publishing
 Travel
 Manufacturing

Education. 12/5/2012 28

 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

Copyright © 2012 Pearson
Education. 12/5/2012 29

 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

Education. 12/5/2012 30

 Advantages and Disadvantages of Computer
Use

Education. 12/5/2012 31

 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.

Education. 12/5/2012 32

 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

Education. 12/5/2012 33

 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

Education. 12/5/2012 34

 Software programs
◦ Contain flaws
 Errors cause programs to run slowly or miscalculate.
 Bugs are almost impossible to eliminate completely.

Education. 12/5/2012 35

 Computer ethics
◦ Moral dilemmas relating to computer
usage
 Digital 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

Education. 12/5/2012 36

 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

Education. 12/5/2012 37

 Automation
◦ Replacement of people by machines and
computers
 Outsourcing
◦ 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.

Education. 12/5/2012 38

 Bea 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.

Education. 12/5/2012 39

Computer applications in_modern_day_society

Recommended

Recommended

More Related Content

What's hot

What's hot (17)

Viewers also liked

Viewers also liked (6)

Similar to Computer applications in_modern_day_society

Similar to Computer applications in_modern_day_society (20)

Computer applications in_modern_day_society