Input, Output, and
Storage
What Kinds of Peripheral
Devices Would Suit Your
Needs?
Chapter 5
Student Learning Outcomes
1. List and compare eight input devices.
2. Define and describe four types of pointing
devices.
3. Compare and contrast inkjet and laser printers.
4. Define the three major technologies on which
computer storage is based.
©2003 The McGraw-Hill Companies
Student Learning Outcomes
5. Describe the three classes of CDs and the three
classes of DVDs that are available.
6. List and describe five types of flash memory
cards that are available for electronic devices
such as computers and cameras.
©2003 The McGraw-Hill Companies
Introduction
In this chapter, we’ll discuss various input,
output, and storage devices designed to
meet the various needs and lifestyles of
people.
This chapter explores the features available
in these devices.
©2003 The McGraw-Hill Companies
What Peripheral Devices
Suit Your Needs?
Input Devices
Output Devices
Storage Devices
©2003 The McGraw-Hill Companies
5.1 Input Devices
Input device captures information and translates it into a form
that can be processed and used by other parts of your computer.
•Keyboards
•Pointing devices
•Game controllers
•Scanners
•Styluses
•Microphones
•Digital cameras
•Web cams
•
SimNet
Concepts Support CD:
“Overview of Input Devices” and “Other Everyday Input
Devices”
p. 5.130 Fig. 5-1
©2003 The McGraw-Hill Companies
Input Devices
•
The keyboard is the most common input
device. Types of keyboards include:
•
Wireless
•
Multimedia and one-touch access
•
Portable keyboards for PDAs
SimNet
Concepts Support CD: “Keyboards”
p. 5.131 Fig. 5-2
©2003 The McGraw-Hill Companies
Types of Input Devices
p. 5.131 Fig. 5-2
©2003 The McGraw-Hill Companies
Pointing Devices
•
Pointing devices are mainly used to choose and enter
commands
•
Pointing devices tend to have PS/2 connectors or
USB connectors
•
PS/2 connector fits into a PS/2 port, which a small round
socket with small holes that fit the pins on the connector
•
USB connectors fit into USB ports, and these are small
rectangular openings on the back or front of your computer,
or even on your keyboard or monitor
SimNet
Concepts Support CD: “Ports and Cables”
p. 5.131 Fig. 5-2
©2003 The McGraw-Hill Companies
Pointing Devices
•
Various pointing devices are available
•
Types of pointing devices:
•
Mouse
•Mechanical
•Optical
mouse
mouse
•Wireless
mouse
•
Trackball
•
Touchpad
•
Pointing stick
SimNet
Concepts Support CD: “Mice”
p. 5.132 & P. 5.133 Fig. 5-3 & Fig 5.4
©2003 The McGraw-Hill Companies
Game Controller
•
Game controllers are used mainly to play games
•
Types of gaming devices
•
Gamepads
•
Joysticks
•
Gaming wheels
•
Force feed
p. 5.134 Fig. 5-5
©2003 The McGraw-Hill Companies
Specialized Input Devices
•
Other types of input devices include:
•
Scanners
•
Styluses
•
Microphones
•
Digital cameras
•
Web cams
p. 5.135 Fig. 5-6
©2003 The McGraw-Hill Companies
Scanner
•Scanner
is a light sensitive device that helps you
copy or capture images, photos, and artwork
that exist on paper. Types of scanners include:
•Flatbed
SimNet
Concepts Support CD: “Scanners”
©2003 The McGraw-Hill Companies
Styluses
•
•
Stylus is an input device consisting of a thin
stick that uses pressure to enter information
or to click and point
Styluses are used with:
•PDAs
•Tablet
PCs
•Graphics tablets
p. 5.135 Fig. 5-6
©2003 The McGraw-Hill Companies
Microphones
•
•
Microphones are used to
input audio
Three main types of
microphones are:
•Desktop
microphones
•Headsets
•Directional microphones
•
Speech recognition is
increasingly being included in
application software
©2003 The McGraw-Hill Companies
Digital Cameras
•
Digital cameras are used to:
•
•
•
•
•
Download images to a computer
Post pictures to the Web
Produce videos
Resolution is measured in
megapixels
Higher the resolution, better the
image quality, but the more
expensive the camera
SimNet
Concepts Support CD: “Digital Cameras”
©2003 The McGraw-Hill Companies
Web Cams
•
Web cam is a video camera that
can be used to take images for
uploading to the Web
©2003 The McGraw-Hill Companies
5.2 Output Devices
• Output devices take information
within your computer and
present it to you in a form that
you can understand
• Main output devices:
– Monitors
– Printers
– Speakers
SimNet
Concepts Support CD:
“Overview of Output Devices”
©2003 The McGraw-Hill Companies
Flat Panel Display Devices
• Devices with flat-panel displays
• Tablet PCs
• PDAs
• Cellular phones
• Desktop computers
©2003 The McGraw-Hill Companies
Monitors
• CRTs
• Flat-panel displays
– Gas plasma
– LCD (liquid crystal display)
• Passive matrix
• Active matrix
– Called TFT (thin film transistor)
– Separate transistor for every pixel
SimNet
Concepts Support CD: “Monitors”
p. 5.137 Fig. 5-9
©2003 The McGraw-Hill Companies
Screen Talk
• Screen size measured as a diagonal line across the
screen – from corner to opposite corner
• Resolution the number of pixels displayed on the
screen (the higher the resolution, the closer together
the dots)
• Pixels (or picture element) dots that make up the
image on your screen
• Dot pitch is the distance between the centers of a
pair of like-colored pixels
• Refresh rate the speed with which a monitor
redraws the image of the screen, and is measured in
hertz
©2003 The McGraw-Hill Companies
Printers
• Inkjet – most popular
– Makes images by forcing droplets
through nozzles
– Top speed is 20 pages per minute
• Laser
– Forms images using an
electrostatic process
– Prints between 3 and 30 pages per
minute
©2003 The McGraw-Hill Companies
Printers - Cont
• Resolution of a printer is the
number of dots per inch (dpi) it
produces.
• Higher the resolution, better the
image, and usually the more
costly the printer
©2003 The McGraw-Hill Companies
Printers - Cont.
•
Multifunction printer:
Scan, copy, fax, and print
•
Can be either inkjet or laser
•
•
Cost less than buying
individual units
•
Take up less desk space
SimNet
Concepts Support CD: “Printers”
p. 5.139 Fig. 5-11
©2003 The McGraw-Hill Companies
Speakers
•
A speaker is a device that
produces computer output as
sound
•
Speakers are common
devices in computer systems
Examples include:
•
Built-in speaker
•
Two-device set speakers
•
Surround sound speakers
©2003 The McGraw-Hill Companies
I•Can: Use a Computer Without
Neck and Shoulder Pain
• Computer work can lead
to physical problems
• Ergonomics – deals with
reducing discomfort
• Should sit up straight at
your computer
SimNet
Concepts Support CD: “Ergonomics”
©2003 The McGraw-Hill Companies
Using Your Computer:
Ergonomics and Health
• Position your screen about the length of your
arm away so that you look slightly down at it
• Your elbows, knees, and hips should form
right angles
• Your back should be at a right angle to the
floor
• Rest your eyes by looking away from the
screen frequently
©2003 The McGraw-Hill Companies
Using Your Computer:
Ergonomics and Health
• Stretch your shoulders, back, arms, and
wrists at least every 30 minutes
• Stretch your hands downward and backward
frequently
• Always listen to your body when it tells you
that you’re uncomfortable and do something
about it
©2003 The McGraw-Hill Companies
5.3 Storage Devices
•
•
•
Storage device stores information to be
recalled and used at a later time
Storage device consists of:
•Storage medium
•Storage device
Three major technology types for
information storage:
•Magnetic
•Optical or laser
•Flash memory
SimNet
Concepts Support CD: “Storage Concepts”
©2003 The McGraw-Hill Companies
Storage Medium Terms
– Byte
– Kilobyte (KB)
– Megabytes (MB)
– Gigabytes (GB)
– Terabytes (TB)
– Petabyte (PB)
– Exabyte (EB)
= 8 bits
≈ 1 Thousand Bytes
≈ 1 Million Bytes
≈ 1 Billion Bytes
≈ 1 Trillion Bytes
≈ 1 quadrillion Bytes
≈ 1 quintillion Bytes
©2003 The McGraw-Hill Companies
Magnetic and Optical
Storage
p. 5.142 & 5.144 Fig. 5.13 & 5.16
©2003 The McGraw-Hill Companies
Magnetic Storage Devices:
Internal Magnetic Hard Disk
•
Magnetic storage devices can be
either internal or external
•
•
Internal magnetic hard disks are
fixed inside the system unit
External magnetic hard disks are
portable
SimNet
Concepts Support CD: “Removable Disks”
©2003 The McGraw-Hill Companies
Magnetic Storage Devices:
Internal Magnetic Hard Disk
• Internal hard disk is a magnetic
storage device with
• One or more thin platters that store
information sealed inside the disk
drive.
• Read/write heads access the
information on surface
• Heads read information while copying
it from disk to RAM
• Heads write information when
copying it from RAM to disk
©2003 The McGraw-Hill Companies
Magnetic Storage Devices:
External Magnetic Hard Disk
• External hard disks are
magnetic storage media which
are portable storage units that
you can connect to your
computer as necessary
• Great for backup storage devices
• Ability to transport your hard disk
from one computer to another
©2003 The McGraw-Hill Companies
Hard Drives
• Long term storage system
and application software
• Operating system and
application software are
copied from the hard disk
to memory
• Capacity measured in
gigabytes
©2003 The McGraw-Hill Companies
Floppy Disks and Zip Disks
• Removable magnetic storage
media come in two basic types:
– Traditional floppy disks
– Zip disks
• These storage media are useful for:
– Storing files for backup or security
purposes
– Transferring files from one computer
to another
©2003 The McGraw-Hill Companies
Removable Magnetic
Storage: Floppy Disk
• Floppy Mylar disk
– Housed inside a hard plastic
casing
– Thin, flexible plastic disk
• 3.5 inch floppy disks
– also called floppies, diskettes,
floppy disks
– Holds about 1.44 megabytes of
information
• High-capacity disks
– Zip® disk
p. 5.144 Fig. 5.15
©2003 The McGraw-Hill Companies
Removable Magnetic
Storage: Zip Disk
• High capacity plastic platter disk
– Called removable hard disks
– Provide a higher storage capacity than Mylar
disks
• Example - Zip® disk with capacity of 100MB,
250MB, and 750MB
©2003 The McGraw-Hill Companies
Optical Storage
• CDs
• DVDs
• Both are optical
storage and have
three formats:
– Read-only
– Write-once
– Read-and-write
©2003 The McGraw-Hill Companies
Optical Storage Media
• Read-Only
 CD-ROM
 DVD-ROM
• One-Time Writable
 CD-R
 DVD-R
 DVD+R
SimNet
• Fully Read-andWrite
 CD-RW
 DVD-RW or
DVD+RW or
DVD-RAM
Concepts Support CD: “CDs and DVDs”
©2003 The McGraw-Hill Companies
Flash Memory Cards
• Flash memory cards have
high-capacity storage
laminated inside a small
piece of plastic
• Flash flash memory cards do
not need a drive with moving
parts to operate
©2003 The McGraw-Hill Companies
Flash Memory Talk
•
•
•
•
CompactFlash (CF)
xD-Picture Card (xD)
SmartMedia (SM) Card
SecureDigital (SD) card and
MultiMediaCards (MMC)
• Memory Stick Media
©2003 The McGraw-Hill Companies
Flash Memory Card Readers
• Some devices have flash memory slots
into which you slide your flash memory
card
• Other devices can use an external
flash memory card reader in order to
transfer information
• A flash memory drive is a flash memory
storage medium for a computer that is
small enough to fit in your pocket and
usually plugs directly into a USB port
©2003 The McGraw-Hill Companies
©2003 The McGraw-Hill Companies
5.4 Consumer Q&A
1. How Can I Tell How Many Megapixels My
Camera Should Have to Print Good 8 x
10 Photos?
2. What Type of Mouse Should I Get for
Gaming?
3. Are Flat Panels and Flat Screens the
Same Thing?
4. What Should I look for in a Scanner?
©2003 The McGraw-Hill Companies
5.5 Key Terms
•
•
•
•
•
•
•
CompactFlash card
Dot pitch
Flash memory cards
Flat-panel display
Floppy disk
Gamepad
Gaming wheel
• Gas plasma display
monitor
• Gigabyte
• Hard disk drive
• Inkjet printer
• Input device
• Joystick
©2003 The McGraw-Hill Companies
5.6 Key Terms
• Kilobyte
• Laser printer
• Liquid crystal display
monitor
• Megabyte
• Memory Stick Media
• Mouse
• Multifunction printer
•
•
•
•
•
MultiMediaCard
Output device
Photo inkjet printer
Refresh rate
Resolution of a
printer
• Resolution of a
screen
• Scanner
©2003 The McGraw-Hill Companies
5.6 Key Terms
•
•
•
•
•
SecureDigital card
SmartMedia card
Storage drive
Stylus
Thin film transistor
display monitor
•
•
•
•
•
•
Touchpad
Trackball
Visible image size
Web cam
xD-Picture Card
Zip disk
©2003 The McGraw-Hill Companies
Review of Concepts
1. Stacking Bytes
 If a gigabyte were a tree, how high would it
be?
2. Organizing Input and Output Devices
©2003 The McGraw-Hill Companies
Hands On Projects
E-Commerce
1. Choosing a Digital Camera
2. Buying Books
 Can you find cheaper textbooks on the Web?
3. Renting an Apartment
 Do you have a pet?
©2003 The McGraw-Hill Companies
Hands On Projects
Ethics, Security & Privacy
1. How’s My Driving? Just Pop Out the
Flash Memory Card!
 Parents can now review your driving once
you’re home
2. The All-Seeing Global Positioning
System
 Should you be trackable 24x7?
©2003 The McGraw-Hill Companies
Hands On Projects
on the Web
1. Comparing Printers
2. Buying a Hard Drive
3. Ordering Photos Online
 How about a smart frame that changes
photos for you?
©2003 The McGraw-Hill Companies
Hands On Projects
Group Activities
1. Exploring the Use of Web Cams
2. Researching DVD Recorders
 Want to copy TV shows to a DVD?
3. Multimedia Controller
4. Protect Your Computer from
Unauthorized Use
 Require a fingerprint check before your
keyboard will work
©2003 The McGraw-Hill Companies