Computer In Everyday Life

Computer In Everyday
Summary
Basic computer concepts
Components of a computer
Networks, the Internet, and
computer software
Many different categories of computers,
computer users, and computer applications
in society
Video : Computer History in a barn
DigiBarn computer museum
Computer Applications in society
Education
Finance
Government
Health Care
Science
Publishing
Travel
Manufacturing
Examples of computer Usage
Home User
Small Office/Home Office User
Mobile User
Power User
Enterprise User
Elements of an Information System
Hardware
Software
Data
People
Procedures
Computer Softwear
Software, also called a program, tells
the computer what tasks to perform and
how to perform them
System Software
Operating system
Utility program
Application Software
Installing
Installing is the process of setting up
software to work with the computer,
printer, and other hardware
A programmer develops software or writes
the instructions that direct the computer
to process data into information
Network and the Internet
The Internet is a worldwide collection of
networks that connects millions of businesses,
government agencies, educational institutions,
and individuals
People use the Internet for a
variety of reasons
A social networking Web site encourages
members to share their interests, ideas, stories,
photos, music, and videos with other registered
users
Advantages and
Disadvantages of Using
computers
Advantages of Using Computers
Speed
Reliability
Consistency
Storage
Communications
Disadvantages of Using Computers
Health Risks
Violation of Privacy
Public Safety
Impact on Labor Force
Impact on Environment
Green computing involves reducing the
electricity consumed and environmental
waste generated when using a computer
Strategies include: Recycling Regulating
manufacturing processes Extending the life of
computers Immediately donating or properly disposing
of replaced computers
The component of a computer
A computer contains many electric,
electronic, and mechanical components
known as hardware
Input Device
Allows you to enter data
and instructions into a
computer
Output Device
Hardware component that
conveys information to one or
more people
System Unit
Case that contains the electronic
components of the computer that are used
to process data
Storage Device
Holds data, instructions,
and information for future
use
Communications Device
Enables a computer to send and receive
data, instructions, and information to and
from one or more computers or mobile
devices
What is a computer?
A computer is an electronic device,
operating under the control of instructions
stored in its own memory
Objecttives Overview
Explain why computer literacy
is vital to success in today’s
world
Describe the five
components of a computer
Define the term, computer, and describe
the relationship between data and
information
Discuss the advantages and disadvantages
that users experience when working with
computers
Define the term, network, and identify
benefits of sharing resources on a network
Discuss the uses of the
Internet and World Wide
Web
Distinguish between system
software and application software
Differentiate among types, sizes, and
functions of computers in each
category
Describe the role of each
element in an information
system
Explain how home users, small office/home
office users, mobile users, power users, and
enterprise users each interact with
computers
Discuss how society uses computers in
education, finance, government, health
care, science, publishing, travel, and
manufacturing
A world of computers
Computers are everywhere
Categories of Computers
Personal Computers
A personal computer can perform all of its
input, processing, output, and storage
activities by itself
Two popular architectures
are the PC and the Apple
Mobile Computer and Mobile Devices
Mobile Computer
Personal computer you can
carry from place to place
Examples include notebook
computers, laptop computers, and
Tablet PCs
Mobile Device
Computing device small
enough to hold in your hand
Examples include smart phones, PDAs,
handheld computers, portable media
players, and digital cameras
Game consoles
Examples include smart phones, PDAs,
handheld computers, portable media
players, and digital cameras
Servers
A server controls access to the hardware, software,
and other resources on a network Provides a
centralized storage area for programs, data, and
information
Mainframes
A mainframe is a large, expensive, powerful
computer that can handle hundreds or
thousands of connected users
simultaneously
Supercomputers
A supercomputer is the
fastest, most powerful
computer
Fastest supercomputers are capable
of processing more than one
quadrillion instructions in a single
second
Embedded Computers
An embedded computer is a
specialpurpose computer that functions
as a component in a larger product
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