Transcript CGS 1000 Introduction to Computers and Technology Fall 2006

CGS 1000
Introduction to Computers and
Technology
Fall 2006
Discovering Computers Fundamentals,
Third Edition
Topics
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Chapter 1
Class Activity
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Campus Cruiser (HawkNet Email)
Discovering Computers Fundamentals,
Third Edition
Chapter 1
Introduction to
Computers
Discovering Computers Fundamentals,
Third Edition
OBJECTIVES
1.
2.
3.
4.
5.
6.
7.
Recognize the importance of computer literacy
Identify the components of a computer
Discuss the uses of the Internet and World Wide
Web
Identify the categories of software
Describe the categories of computers
Identify the types of computer users
Discuss various computer applications in society
Discovering Computers Fundamentals,
Third Edition
A World of Computers
What is computer literacy?
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Knowledge and understanding of computers and their uses
Aspects of computer literacy include:
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plugging in and turning the computer on
Composing, editing and printing documents
the ability to communicate with others using computers through electronic mail (email) or
instant messaging services
managing and editing pictures (from cell phones, digital cameras or even scans)
Opening files and recognizing different file types
Discovering Computers Fundamentals,
Third Edition
What Is a Computer?

Electronic device operating under the control of
instructions stored in its own memory
Accepts data
Raw facts, figures, and symbols
Processes data into
information
Data that is organized, meaningful, and
useful
Discovering Computers Fundamentals,
Third Edition
Produces and
stores results
Advantages of Using Computers
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Speed
Reliability
Consistency
Storage
Communications
Discovering Computers Fundamentals,
Third Edition
Disadvantages of Using Computers
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Violation of Privacy
Impact on Labor Force
Health Risks
Impact on Environment
Discovering Computers Fundamentals,
Third Edition
The Components of a Computer
1.
2.
3.
4.
5.
Input Devices
Output Devices
System Unit
Storage Devices
Communication Devices
Discovering Computers Fundamentals,
Third Edition
Input Devices
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Hardware used to enter data and
instructions
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Widely used input devices:
1.
2.
3.
4.
5.
6.
Keyboard
Mouse
Microphone
Scanner
Digital Camera
PC Video Camera
Discovering Computers Fundamentals,
Third Edition
Output Devices
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Hardware that conveys information
to one or more people
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Common output devices:
1.
2.
3.
Printer
Monitor
Speakers
Discovering Computers Fundamentals,
Third Edition
System Unit
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Case containing electronic components
used to process data.
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Motherboard or Circuit Board.
2 Components of Motherboard:
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1.
2.
Central Processing Unit (CPU)
Memory
Discovering Computers Fundamentals,
Third Edition
CPU
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Also called a processor
The electronic component that interprets and
carries out the basic instructions that operate
the computer.
Discovering Computers Fundamentals,
Third Edition
Memory
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Consists of electronic components that store
instructions waiting to be executed and data
needed by those instructions
Discovering Computers Fundamentals,
Third Edition
The Components of a Computer
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What is storage?
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Holds data, instructions, and information
for future use
Storage media
Physical material on which data, instructions,
and information are stored
Storage device
Records and retrieves items to and from
a storage medium
Discovering Computers Fundamentals,
Third Edition
The Components of a Computer
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What is storage media?
Hard Disks
CDs
Floppy Disks
Memory Cards
USB Flash Drives
DVDs
Discovering Computers Fundamentals,
Third Edition
The Components of a Computer

What is a storage device?
Retrieves
(reads)
Records (writes)
items to storage
items from
media
storage
media
Often function
as a source
of input
Discovering Computers Fundamentals,
Third Edition
The Components of a Computer
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What is a floppy disk?
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Thin, circular,
flexible disk
enclosed in rigid
plastic shell
Discovering Computers Fundamentals,
Third Edition
The Components of a Computer

What is a USB flash drive?
Provides much
greater storage
capacity than a
floppy disk or
Zip® disk
 Small and
lightweight enough
to be transported
on a keychain or
in a pocket
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Discovering Computers Fundamentals,
Third Edition
The Components of a Computer

What is a hard disk?
Provides greater storage
capacity than a
floppy disk, Zip disk, or
USB flash drive
 Most are housed inside
of the system unit
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Discovering Computers Fundamentals,
Third Edition
The Components of a Computer
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What is a compact disc?
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Flat, round, portable metal disc
CD-ROM
 DVD-ROM
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Discovering Computers Fundamentals,
Third Edition
The Components of a Computer
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What is a communications device?
• Hardware component that enables a computer to
send and receive data, instructions, and information
• E.g.: Modem
• Occurs over cables, telephone lines, cellular radio
networks (wireless), satellites (wireless), and other
transmission media.
Discovering Computers Fundamentals,
Third Edition
Computer Components
Discovering Computers Fundamentals,
Third Edition
Questions?
Discovering Computers Fundamentals,
Third Edition