Computing Essentials 2008
Chapter 7: Input and Output
•
Input (182)
o Any data or instructions that are used by a computer.
o Input devices are hardware used to translate words, sounds, images, and actions
that people understand into a form that the system unit can process.
o Keyboard Entry (182)
ƒ Traditional keyboards—full-sized, rigid, rectangular keyboards that
include function, navigational, and numeric keys.
ƒ Flexible keyboards—fold or roll up for easy packing or storage. They are
designed to provide mobile users with a full-sized keyboard with minimal
storage requirements.
ƒ Ergonomic keyboards—similar to traditional keyboards. The keyboard
arrangement, however, is not rectangular and a palm rest is provided. They
are designed specifically to alleviate wrist strain associated with the
repetitive movements of typing.
ƒ Wireless keyboards—transmit input to the system unit through the air.
ƒ PDA keyboards—miniature keyboards for PDAs used to send e-mail,
create documents, etc.
o Pointing Devices (184)
ƒ Mice
• Mechanical mouse - It has a ball on the bottom and is attached
with a cord to the system unit. As you move the mouse across a
smooth surface, or mouse pad, the roller rotates and controls the
pointer on the screen.
• Optical mouse has no moving parts. It emits and senses light to
detect mouse movement. It can be used on any surface, is more
precise, and does not require periodic cleaning.
• Cordless or wireless mouse is a battery-powered device that
typically uses radio waves or infrared light waves to communicate
with the system unit.
• Trackball, also known as the roller ball, to control the pointer by
rotating a ball with your thumb.
• Touch surfaces, or touch pads, to control the pointer by moving
and tapping your finger on the surface of a pad.
• Pointing stick, located in the middle of the keyboard, to control
the pointer by directing the stick with your finger.
ƒ Joysticks, used with computer games, control game actions by varying the
pressure, speed, and direction of the joystick. Additional controls, such as
buttons and triggers, are used to specify commands or initiate specific
actions.
ƒ Touch screens are a particular kind of monitor with a clear plastic outer
layer. Behind this layer are crisscrossed invisible beams of infrared light.
This arrangement enables someone to select actions or commands by
touching the screen with a finger.
ƒ Light pens are a light-sensitive penlike device. They are placed against
the monitor, which closes a photoelectric circuit and identifies the spot for
entering or modifying data.
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Computing Essentials 2008
Chapter 7: Input and Output
ƒ
A stylus is a penlike device commonly used with tablet PCs and PDAs. It
uses pressure to draw images on a screen.
o Scanning Devices (186)
ƒ Optical scanner, also known simply as a scanner, accepts documents
consisting of text and/or images and converts them to machine-readable
form. These devices do not recognize individual letters or images. Rather,
they recognize light, dark, and colored areas that make up individual
letters or images.
• Flatbed
• Portable
ƒ Card Reader (187)
• Magnetic card reader – encoded information is stored on a thin
magnetic strip located on the back of the card. When the card is
swiped through the magnetic card reader, the information is read.
• Radio frequency card readers - has a small RFID (radio
frequency identification) microchip that contains the user’s
encoded information. Whenever the card is passed within a few
inches of the card reader, the user’s information is read.
ƒ Bar code reader
• Either handheld wand readers or platform scanners.
• They contain photoelectric cells that scan bar codes printed on
product containers.
ƒ Character and mark recognition devices (188)
• Magnetic-ink character recognition (MICR)—used by banks to
automatically read numbers on the bottom of checks and deposit
slips.
• Optical-character recognition (OCR)—uses special preprinted
characters that can be read by a light source and changed into
machine-readable code.
• Optical-mark recognition (OMR) - senses the presence or
absence of a mark, such as a pencil mark, and is often used to score
multiple-choice tests.
o Image Capturing Devices (188)
ƒ Digital cameras - images are recorded digitally on a disk or in the
camera’s memory rather than on film and then downloaded, or transferred,
to your computer.
ƒ Digital video cameras record motion digitally on a disk or in the camera’s
memory.
ƒ WebCams (Web cameras) are specialized digital video cameras that
capture images and send them to a computer for broadcast over the
Internet.
o Audio-Input devices (189)
ƒ Audio-input devices convert sounds into a form that can be processed by
the system unit. The most widely used audio-input device is the
microphone.
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Computing Essentials 2008
Chapter 7: Input and Output
ƒ
Voice recognition systems (192) use a microphone, a sound card, and
special software. These systems allow users to operate computers and to
create documents using voice commands.
• Voice command mode allows the user to select menu items,
toolbars, and dialog box options.
• Dictation mode allows the user to dictate text directly into a Word
document.
o Making it Work for you (190)
ƒ WebCams and Instant Messaging (IM)
ƒ Explains how to setup IM contacts and chat with them.
ƒ Explains how to setup a video conference with IM software.
ƒ Explains how to share applications via IM software.
Output Devices (192)
o Output is processed data or information, and typically takes the form of text,
graphics, photos, audio, and/or video.
o Output devices are any hardware used to provide or to create output.
o They translate information that has been processed by the system unit into a form
that humans can understand.
o Monitors
ƒ Display screens or screens
ƒ Present visual images of text and graphics.
ƒ Clarity refers to the quality and sharpness of the displayed images, and is
composed of four elements
• Resolution - Images are formed on a monitor by a series of dots or
pixels. Resolution is expressed as a matrix of these dots or pixels.
• Dot (pixel) pitch is the distance between each pixel. The lower
the dot pitch, the clearer the images produced.
• Refresh rate indicates how often a displayed image is updated or
redrawn on the monitor.
• Size or viewable size is measured by the diagonal length of a
monitor’s viewing area. The smaller the monitor size, the better
the quality of images displayed.
ƒ Cathode-Ray Tubes (193) - Similar to televisions, these monitors are
typically placed directly on the system unit or on the desktop.
ƒ Flat-panel monitors are much thinner and require less power to operate
than CRTs. As a result, flat-panel monitors are rapidly replacing CRTs.
• Almost all of today’s flat-panel monitors are LCD (liquid crystal
display).
• Passive-matrix, or dual-scan monitors, create images by scanning
the entire screen.
• Active-matrix or thin film transistor (TFT) monitors do not scan
down the screen; instead, each pixel is independently activated.
ƒ E-books, also known as e-book readers, are handheld, book-sized devices
that display text and graphics.
ƒ Data projectors are connect to microcomputers and project computer
output just as it would appear on a monitor.
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Chapter 7: Input and Output
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High-definition television (HDTV) - the merger of microcomputers and
television.` HDTV delivers a much clearer and more detailed wide-screen
picture than regular television.
o Printers (194)
ƒ Translate information that has been processed by the system unit and
present the information on paper.
ƒ Features
• Resolution - the clarity of images produced and measured in dpi
(dots per inch). The higher the dpi, the better the quality of images
produced.
• Color capability
• Speed - measured in the number of pages printed per minute.
• Memory - The more memory in a printer, the faster it will be able
to create large documents.
ƒ Ink-jet printers (195)
• Spray ink at high speed onto the surface of paper.
• The most widely used printers.
• Come in Black only or Color.
• Reliable, quiet, and relatively inexpensive.
• Typical ink-jet printers produce 17 to 19 pages per minute of
black-only output and 13 to 15 pages of color output.
ƒ Laser printers
• Use a laser light beam to produce images with excellent letter and
graphics quality.
• Come in Black only or Color.
• Reliable, quiet, but more expensive than an ink-jets.
• Faster than ink-jets and are used in applications requiring highquality output.
ƒ Thermal printers (196) use heat elements to produce images on heatsensitive paper.
ƒ Dot-matrix printers form characters and images using a series of small
pins on a print head.
ƒ Plotters are special-purpose printers for producing maps, images, and
architectural and engineering drawings.
ƒ Photo printers are special-purpose printers designed to print photoquality images from digital cameras.
ƒ Portable printers are designed to work with a notebook computer, and
may be ink-jet or laser printers, print in black and white or color, and
connect with USB or parallel port connections.
o Audio-Output devices (197) - translate audio information from the computer into
sounds that people can understand. The most widely used audio-output devices
are speakers and headphones.
Combination Input-Output devices (198)
o Fax Machines - To send a fax (output), these devices scan the image of a
document converting the light and dark areas into a format that can be sent
electronically over standard telephone lines. To receive a fax (input), these
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Computing Essentials 2008
Chapter 7: Input and Output
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devices reverse the process and print the document (or display the document on
your monitor) using signals received from the telephone line.
o Multifunctional devices (MFD), also known as all in one (AIO) devices,
typically combine the capabilities of a scanner, printer, fax, and copy machine.
o Telephony (199) is the transmission of telephone calls over computer networks.
ƒ Computer-to-computer
ƒ Computer-to-traditional telephone
ƒ Traditional telephone-to-traditional telephone
o Terminals
ƒ Dumb terminals can be used to input and receive data, but it cannot
process data independently.
ƒ Intelligent terminals are microcomputers with communications software
and communications link to connect the terminal to the larger computer or
to the Internet. Typically have only one type of secondary storage (an
internal hard disk drive), a sealed system unit, and no expansion slots.
ƒ Network terminals do not have a hard-disk drive and must rely on a host
computer or server for application and system software.
ƒ Internet terminals provide access to the Internet and typically display
Web pages on a standard television set.
Careers in IT (200)
o Technical writers prepare instruction manuals, technical reports, and other
scientific or technical documents.
o Work for computer software firms, government agencies, or research institutions.
o They translate technical information into easily understandable instructions or
summaries.
o Requires a college degree in communications, journalism, or English and a
specialization in, or familiarity with, a technical field.
o Annual salary in the range of $41,000 to $69,000
A Look to the Future (201)
o Electronic interpretation
ƒ The company SpeechGear has developed a machine called Interact that
takes verbal statements in one language, converts the statements to text,
translates that text to another language, and then vocalizes the translated
text.
ƒ Computers have a difficult time understanding idioms.
ƒ Have difficulty correctly identifying words by their context.
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Computing Essentials 2008
Chapter 7: Input and Output
•
Input (182)
o Input devices are hardware used to translate words, sounds, images, and actions
that people understand into a form that the system unit can process.
o You can emphasize that it is how users put data into the system.
o Keyboard Entry (182) – Students are familiar with most types of keyboards. If
they aren’t then you can use the following figures to help illustrate what they are.
ƒ Traditional keyboards—You can use figure 7-4 on page 183 to help
illustrate the different features on a traditional keyboard.
ƒ Flexible keyboards—figure 7-1 on page 182 can help illustrate what a
flexible keyboard looks like.
ƒ Ergonomic keyboards—figure 7-2 on page 182 is a good illustration of
an ergonomic keyboard
ƒ Wireless keyboards—
ƒ PDA keyboards—figure 7-3 on page 183 illustrates this type of keyboard
o Pointing Devices (184) – Most students are familiar with the various pointing
devices, so you can have them list the different types of devices they know and
discuss their uses.
ƒ Mice
ƒ Joysticks
ƒ Touch screens
ƒ Light pens
ƒ Stylus
o Scanning Devices (186) - Most students are familiar with the various pointing
devices, so you can have them list the different types of devices they know and
discuss their uses.
ƒ Optical scanner,
• Flatbed
• Portable
ƒ Card Reader (187)
• Magnetic card reader
• Radio frequency card readers
ƒ Bar code reader
ƒ Character and mark recognition devices (188)
• Magnetic-ink character recognition (MICR
• Optical-character recognition (OCR
• Optical-mark recognition (OMR)
o Image Capturing Devices (188)
ƒ Digital cameras – The Expanding Your Knowledge exercise #1 on page
210 has the students research how digital cameras work. This can be used
as a lab to accompany the lecture.
ƒ Digital video cameras
ƒ WebCams (Web cameras) There are two exercises at the end of the
chapter that can help further the students knowledge on this subject.
• First, Applying Technology exercise #1 WebCams and Instant
Messaging has the students use the section Making IT Work for
You: WebCams and Instant Messaging on pages 190 and 191 to
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Chapter 7: Input and Output
begin research on the subject. You can use it as a lab by having
them configure and use the software.
• Second, Writing About Technology exercise #1 WebCams can be
used as a homework project to expand on the lab/lecture and delve
deeper into ethical issues.
o Audio-Input devices (189)
ƒ Applying Technology exercise #3, Voice Recognition can be used as a lab
to further the students’ knowledge on the subject. It has them research the
many features of the software and how it can be used.
Output Devices (192)
o Most students are familiar with the various pointing devices, so you can have
them list the different types of devices they know and discuss their uses.
o Monitors
ƒ Cathode-Ray Tubes (193) ƒ Flat-panel monitors
• Passive-matrix, or dual-scan monitors,
• Active-matrix or thin film transistor (TFT)
ƒ E-books
ƒ Data projectors
ƒ High-definition television (HDTV)
o Printers (194)
ƒ Ink-jet printers (195)
ƒ Laser printers
ƒ Thermal printers (196)
ƒ Dot-matrix printers
ƒ Plotters
ƒ Photo printers
ƒ Portable printers
o Audio-Output devices (197)
Combination Input-Output devices
o Fax Machines
o Multifunctional devices (MFD)
o Telephony (199) –The end-of-chapter features provide two exercises that can
work well for labs either together or singly. First, Applying Technology exercise
#2, Internet Telephones, has the students research the web site and learn about the
features of telephony services. Second, Expanding Your Knowledge exercise #2,
How Internet Telephones work, is a more in-depth study of the service. It has the
students discover the devices used, the advantages and disadvantages of the
services, and diagram a computer-to-computer telephony.
o Terminals
ƒ Dumb terminals
ƒ Intelligent terminals
ƒ Network terminals
ƒ Internet terminals
Careers in IT (200)
o Technical writers prepare instruction manuals, technical reports, and other
scientific or technical documents.
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Chapter 7: Input and Output
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o Work for computer software firms, government agencies, or research institutions.
o They translate technical information into easily understandable instructions or
summaries.
o Requires a college degree in communications, journalism, or English and a
specialization in, or familiarity with, a technical field.
o Annual salary in the range of $41,000 to $69,000
A Look to the Future (201)
o Electronic interpretation
ƒ This is a good technology to have an open discussion about. You can
have the students research the topic and present the pros and cons of the
issue.
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Key Terms
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Key Term
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Definition
A type of flat-panel monitor where each pixel is
independently activated. (See also thin film transistor
(TFT) monitor)
The vertical zebra-striped marks printed on product
containers.
Contains photoelectric cells that scan or read bar codes.
(See also bar code scanner)
Contains photoelectric cells that scan or read bar codes.
(See also bar code reader)
The most common type of monitor that are typically
placed directly on the system unit or on the desktop.
The quality and sharpness of the displayed images.
A key, that when held down in combination with another
key, performs an action.
A battery-powered device that typically uses radio waves
or infrared light waves to communicate with the system
unit. (See also wireless mouse)
Specialized devices similar that connect to
microcomputers and project computer output just as it
would appear on a monitor.
Images are recorded digitally on a disk or in the camera’s
memory rather than on film
A specialized device for storing, transferring, and playing
audio files. (See also digital music player)
A specialized device for storing, transferring, and playing
audio files. (See also digital media player)
Record motion digitally on a disk or in the camera’s
memory.
A computer device that presents visual images of text and
graphics. (See also monitor)
A type of printer that forms characters and images using a
series of small pins on a print head.
A function of a monitor that is the distance between each
pixel. (See also pixel pitch)
The measurement of printer resolution, the more dots-perinch the better the quality of the image printed.
Type of flat-panel monitor that create images by scanning
the entire screen. (See also passive-matrix monitor)
A type of terminal that is used to input and receive data,
but cannot process data independently.
Handheld, book-sized devices that display text and
graphics.
A type of keyboard designed specifically to alleviate wrist
strain associated with the repetitive movements of typing.
A device for sending and receiving images over telephone
lines.
A type of monitor that is much thinner and requires less
power to operate than CRTs
The image to be scanned is placed on a glass surface and
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active-matrix monitor (193)
bar code (187)
bar code reader (187)
bar code scanner (187)
cathode-ray tube (CRT) monitor (193)
clarity (192)
combination key (183)
cordless mouse (185)
data projector (194)
digital camera (188)
digital media player (198)
digital music player (198)
digital video camera (189)
display screen (192)
dot-matrix printer (197)
dot pitch (193)
dots-per-inch (dpi) (195)
dual-scan monitor (193)
dumb terminal (199)
e-book (193)
ergonomic keyboard (182)
fax machine (198)
flat-panel monitor (193)
flatbed scanner (186)
Key Terms
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Chapter 7: Input and Output
flexible keyboard (182)
handwriting recognition software (185)
headphones (197)
high-definition television (HDTV)
(194)
ink-jet printer (195)
intelligent terminal (199)
Internet telephone (199)
Internet telephony (199)
IP telephony (199)
joystick (185)
keyboard (182)
laser printer (195)
light pen (185)
liquid crystal display (LCD) (193)
magnetic-card reader (187)
magnetic-ink character recognition
(MICR) (188)
mechanical mouse (184)
monitor (192)
mouse (184)
mouse pointer (184)
multifunctional device (MFD) (198)
network terminal (199)
Key Terms
the scanner records the image from below.
A keyboard designed to fold or roll up for easy packing or
storage.
Translates handwritten notes into a form that the system
unit can process.
An audio-output device
A digitized television output that delivers a much clearer
and more detailed wide-screen picture than regular
television.
A type of printer that sprays ink at high speed onto the
surface of paper.
A microcomputer with communications software and a
telephone hookup (modem) or other communications link.
Specialized input and output devices for receiving and
sending voice communication.
A type of communications system that uses the Internet
rather than traditional communication lines to support
voice communication. (Se also IP telephony, voice over
IP)
A type of communications system that uses the Internet
rather than traditional communication lines to support
voice communication. (Se also Internet telephony, voice
over IP)
Input device for computer games.
Convert numbers, letters, and special characters that
people understand into electrical signals.
A type of printer that uses a laser light beam to produce
images with excellent letter and graphics quality.
A light-sensitive pen-like device, which when placed
against a monitor, it closes a photoelectric circuit and
identifies the spot for entering or modifying data.
A thin, flat display made up of any number of color or
monochrome pixels arrayed in front of a light source or
reflector.
A machine that reads encoded information stored on a thin
magnetic strip located on the back of a card.
Used by banks to automatically read numbers on the
bottom of checks and deposit slips.
It has a ball on the bottom and is attached with a cord to
the system unit.
A computer device that presents visual images of text and
graphics. (See also display screen)
An input device that controls a pointer that is displayed on
the monitor.
Often in the form of an arrow, it moves on the screen as
the user moves the computer mouse
A type of combination input/output device that combines
the capabilities of a scanner, printer, fax, and copy
machine.
A type of terminal that does not have a hard-disk drive and
must rely on a host computer or server for application and
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numeric keypad (183)
optical-character recognition (OCR)
(188)
optical-mark recognition (OMR) (188)
optical mouse (184)
optical scanner (186)
passive-matrix monitor (193)
PDA keyboard (183)
personal laser printer (196)
photo printer (197)
picture elements (192)
pixel (192)
pixel pitch (193)
platform scanner (187)
plotter (197)
pointing stick (185)
portable printer (197)
portable scanner (186)
printer (194)
radio frequency card reader (187)
radio frequency identification (RFID)
(187)
refresh rate (193)
resolution (192, 195)
roller ball (185)
shared laser printer (196)
speakers (197)
stylus (185)
technical writer (200)
Key Terms
system software. (See also thin client)
Usually located on the right-side of a keyboard, it is used
to enter numbers and arithmetic symbols.
Uses special preprinted characters that can be read by a
light source and changed into machine-readable code.
senses the presence or absence of a mark
A mouse that emits and senses light to detect mouse
movement.
Accepts documents consisting of text and/or images and
converts them to machine-readable form.
Type of flat-panel monitor that create images by scanning
the entire screen. (See also dual-scan monitor)
A miniature keyboard designed to fit on a PDA.
A type of laser printer that does not support color, is less
expensive, and slower than a standard laser printer.
A type of special-purpose printer designed to print photoquality images from digital cameras.
A series of dots that form images on a monitor (See also
pixel)
A series of dots that form images on a monitor (See also
picture elements)
A function of a monitor that is the distance between each
pixel. (See also dot pitch)
A wall or table mounted bar code scanner
A type of special-purpose printer for producing maps,
images, and architectural and engineering drawings.
Similar to a mouse and usually located in the middle of the
keyboard, the pointer is controlled by directing the stick
with a finger.
A small and lightweight printer designed to work with a
notebook computer.
Typically a handheld device that slides across the image,
making direct contact.
A device that translates information that has been
processed by the system unit and presents the information
on paper.
A reader that uses radio frequency to read an encoded
microchip embedded on a card.
An encoded microchip that uses radio frequency to be
read.
How often a displayed image is updated or redrawn on a
monitor
A matrix of pixels
Controls the pointer by rotating a ball with a thumb (See
also trackball)
A type of laser printer that supports color, prints over 50
pages per minute, and is used by many people.
An audio-output device
A pen-like device commonly used with tablet
PCs and PDAs.
A person who prepares instruction manuals, technical
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telephony (199)
terminal (199)
thermal printer (196)
thin client (199)
thin film transistor (TFT) monitor (193)
toggle key (183)
touch pad (185)
touch screen (185)
trackball (185)
traditional keyboard (182)
Universal Product Code (UPC) (187)
Voice over IP (VoIP) (199)
voice recognition system (192)
wand reader (187)
WebCam (189)
wheel button (184)
wireless keyboard (183)
wireless mouse (185)
Key Terms
reports, and other scientific or technical documents.
The transmission of telephone calls over computer
networks.
An input and output device that connects you to a
mainframe or other type of computer
A type of printer that uses heat elements to produce
images on heat-sensitive paper.
A type of terminal that does not have a hard-disk drive and
must rely on a host computer or server for application and
system software. (See also network terminal)
A type of flat-panel monitor where each pixel is
independently activated. (See also active-matrix monitor)
A key that turns a feature on or off.
Controls the pointer by moving and tapping a finger on the
surface of a pad.
A monitor with a clear plastic outer layer and crisscrossed
invisible beams of infrared light behind, which enables
actions or commands to be selected by touching the screen
with a finger.
Controls the pointer by rotating a ball with a thumb (See
also rollerball)
A full-sized, rigid, rectangular keyboard that includes
function, navigational, and numeric keys.
A bar code system that almost all supermarkets use
A type of communications system that uses the Internet
rather than traditional communication lines to support
voice communication. (See also IP telephony, Internet
telephony)
Uses a microphone, a sound card, and special software to
allow users to operate computers and to create documents
using voice commands.
A hand-held bar code reader
Specialized digital video cameras that capture images and
send them to a computer.
A button located in the middle of a mouse that can be
rotated to scroll through information that is displayed on
the monitor.
A keyboard that transmits input to the system unit through
the air.
A battery-powered device that typically uses radio waves
or infrared light waves to communicate with the system
unit. (See also cordless mouse)
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Crossword Puzzle Answers:
U
Across
Num.
6
9
10
13
14
16
17
Clue
Used to grade multiple choice exams.
Specialized digital camera that broadcasts images over the
Internet.
Records images digitally on a disk.
Most popular input device used for computer games.
Delivers much clearer picture than regular TV.
Resolution is expressed as a matrix of these dots.
Keyboard that rolls up for storage and transport.
Answer
OMR
WebCam
Digital camera
Joystick
HDTV
Pixel
Flexible
Down
Num.
1
2
3
4
5
7
8
11
12
15
Clue
The distance between each pixel.
Most commonly used way to input data.
Button rotated to scroll through information displayed on the
monitor.
Most widely used type of mouse.
Type of terminal that does no processing.
Number of times a screen is redrawn each second.
Measure of resolution.
Keys that turn features on and off.
Translates processed information into hard copy.
Bar code system used in supermarkets.
Num
Multiple Choice
Answers
Matching
Answers
1
2
3
4
5
6
7
8
9
10
A
B
A
B
D
A
D
C
D
B
I
E
F
J
A
B
G
D
C
H
Answer
Dot pitch
Keyboard
Wheel Button
Mechanical
Dumb
Refresh rate
dpi
Toggle
Printer
UPC
Open Ended Questions:
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1. Define input and output devices.
An input devices are hardware used to translate words, sounds, images, and actions that people
understand into a form that the system unit can process.
An out put device is any hardware used to provide or to create processed data or information.
Answers to End of Chapter materials
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2. Describe the different types of pointing, scanning, image capturing, and audio-input devices.
There is a wide variety of different pointing devices, including the mouse, joystick, touch screen,
light pen, and stylus
There are three types of scanning devices: optical scanners, bar code readers, and character and
mark recognition devices.
Image capturing devices, include digital cameras and digital video cameras.
Audio-input devices include microphones and MIDI devices
3. Describe the three categories of output devices.
The categories of output devices are monitors, printers and audio-output devices
4. Define output and output devices
An output device is any hardware used to provide or to create processed data or information.
Output is any processed data or information.
5. What are combination input and output devices? Describe four such devices.
Combination input and output devices are hardware that combines input and output
capabilities. Some of these devices are fax machines, multifunctional devices, Internet
telephones, and terminals.
Answers to End of Chapter materials
Page 14 of 15
Computing Essentials 2008
Chapter 7: Input and Output
Applying Technology
Focus
Ethical
Web Tools
Software Tools
Expanding Your
Knowledge
Writing About
Technology
WebCams
WebCams and Instant
Messaging
Internet Telephones
Voice Recognition
How Internet Telephones
Works
How Digital Cameras Work
Handwriting Recognition
WebCams
Electronic Security
Writing Skills
Ethical focus
1. Writing About Technology exercise #1 WebCams has the students write a one page
paper on the uses of webcams and how they impact personal privacy.
Web Tools
1. Applying Technology exercise #1 WebCams and Instant Messaging explores using
Microsoft’s Windows Messenger as collaboration tools including video conferencing.
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2. Applying Technology exercise #2 Internet Telephones has the students explore the
features and tools of internet telephone services providers.
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3. Expanding Your Knowledge exercise #2 How Internet Telephones Works has the
students research internet telephony and its advantages and disadvantages, and also,
diagram how it functions.
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Software Tools
1. Applying Technology exercise #3 Voice Recognition has the students research the
functions and devices of a voice recognition system.
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2. Expanding your Knowledge exercise #1 How Digital Cameras Work explores the image
capturing functions and how the images are transferred from the camera to the computer.
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3. Expanding Your Knowledge exercise #3 Handwriting Recognition has the students
research the technology of handwriting recognition and its applications.
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Writing Skills
1. Writing About Technology exercise #1 WebCams has the students write a one page
paper on the uses of webcams and how they impact personal privacy.
2. Writing About Technology exercise #2 Electronic Security has the students write a onepage analysis on electronic security technology.
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Focus tables to End of Chapter materials
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