CGS 1000

1
CGS 1000

• Introduction to Computers and Technology
• Fall 2006

2
Topics

• Chapter 1
• Class Activity
• Campus Cruiser (HawkNet Email)

3
Chapter 1

• Introduction toComputers

4
OBJECTIVES

• 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

5
A World of Computers

• What is computer literacy?
• Knowledge and understanding of computers and
  their uses
• Aspects of computer literacy include
• 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

6
What Is a Computer?

• Electronic device operating under the control of
  instructions stored in its own memory

Processes data into information Data that is
organized, meaningful, and useful
Accepts data Raw facts, figures, and symbols
Produces and stores results
7
Advantages of Using Computers

• Speed
• Reliability
• Consistency
• Storage
• Communications

8
Disadvantages of Using Computers

• Violation of Privacy
• Impact on Labor Force
• Health Risks
• Impact on Environment

9
The Components of a Computer

1. Input Devices
2. Output Devices
3. System Unit
4. Storage Devices
5. Communication Devices

10
Input Devices

• Hardware used to enter data and instructions
• Widely used input devices
• Keyboard
• Mouse
• Microphone
• Scanner
• Digital Camera
• PC Video Camera

11
Output Devices

• Hardware that conveys information to one or more
  people
• Common output devices
• Printer
• Monitor
• Speakers

12
System Unit

• Case containing electronic components used to
  process data.
• Motherboard or Circuit Board.
• 2 Components of Motherboard
• Central Processing Unit (CPU)
• Memory

13
CPU

• Also called a processor
• The electronic component that interprets and
  carries out the basic instructions that operate
  the computer.

14
Memory

• Consists of electronic components that store
  instructions waiting to be executed and data
  needed by those instructions

15
The Components of a Computer

• What is storage?

• 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

16
The Components of a Computer

• What is storage media?

Hard Disks
CDs
Floppy Disks
Memory Cards
USB Flash Drives
DVDs
17
The Components of a Computer

• What is a storage device?

Retrieves(reads)items from storagemedia
Records (writes)items to storagemedia
Often functionas a sourceof input
18
The Components of a Computer

• What is a floppy disk?

• Thin, circular, flexible disk enclosed in rigid
  plastic shell

19
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

20
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

21
The Components of a Computer

• What is a compact disc?

• Flat, round, portable metal disc

• CD-ROM
• DVD-ROM

22
The Components of a Computer

• 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.

23
Computer Components
24
Questions?