Chapter
6
Copyright © 2015 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education.
Computing Essentials 2015
Learning Outcomes
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Define input.
Describe keyboard entry including types and features of keyboards.
Identify different pointing devices including game controllers and styluses.
Describe scanning devices including optical scanners, RFID readers and recognition devices.
Recognize image capturing devices and audio-input devices.
Define output.
Identify different monitor features and types including flat-panels and e-books.
Define printing features and types including inkjet and cloud printers.
Recognize different audio and video devices including Bluetooth technology.
Define combination input and output devices including multifunctional devices, Internet
telephones, and VR headgear and gloves.
11. Explain ergonomics and ways to minimize physical damage.
6-2
Introduction
• Have you ever wondered how information gets into your computer
or comes out in a form you can use?
• Input devices convert what
Computing Essentials 2015
we understand into what the
system unit can process
• Output devices convert what
the system unit has processed
into a form that we can understand
6-3
What is Input?
Computing Essentials 2015
• Any data or instructions used by a computer
• Input devices translate data into a form that the system unit can process
• Some hardware input devices include:
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•
•
•
•
•
Keyboards
Mice
Pointing devices
Scanning devices
Image capturing devices
Audio-input devices
6-4
Keyboard Entry
• Keyboards
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•
•
•
•
Traditional keyboards
Laptop keyboards
Virtual keyboards
Thumb keyboards
Laptop keyboard
Virtual keyboard
Thumb keyboard
6-5
Pointing Devices
Mice Optical
Mechanical
Wireless
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Mouse
Multi-touch
Screen
Touch pad
6-6
Pointing Devices (Cont.)
Joysticks
Dance pad
Game pads
Motion sensing device
Stylus
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•
•
•
•
6-7
Scanning Devices
• Optical scanners
• Flatbed scanners
• Document scanners
• Portable scanners
• Card Readers
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• Magnetic card readers
6-8
Scanning Devices (Cont.)
• Bar code readers
• Wand readers
• Platform scanners
• UPCs
• MaxiCode
• QR Code
• RFID Readers
Bar code readers
• RFID tags are tiny chips embedded for tracking
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• Character and mark recognition devices
• Magnetic-ink character recognition (MICR)
• Optical-character recognition (OCR)
• Optical-mark recognition (OMR)
RFID Reader
6-9
Image Capturing Devices
Digital cameras
Web Cam
• Images recorded digitally on
• Specialized digital video cameras built-in or
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disk or in camera’s memory
attached to the monitor
Digital Camera
6-10
Audio-Input Devices
• Voice recognition systems
• Use a microphone, sound card, and special
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software
• Users can operate computers and create
documents using voice commands
6-11
What is Output?
• Processed data or information
• Types of output
• Text
• Graphics/photos
• Audio & video
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• Output devices
• Monitors
• Printers
• Audio-output devices
6-12
Monitors
• Known as screens or display
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screens
• Output referred to as soft copy
• Features
• Clarity
• Resolution/pixels
• Dot pitch
• Contrast ratios
• Size
• Aspect ratio
Resolution Standards
6-13
Monitors (Continued)
• Flat-panel monitors
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•
•
•
Most widely used
Require less power to operate
Portable and thin
Most are backlit
Two types:
• Liquid Crystal Display (LCD)
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•
Flat-panel monitor
Older monitors
• Light Emitting Diode (LED)
•
More advanced backlighting
• E-Book
• E-Book readers
E-Book
6-14
Monitors (Cont.)
• Other monitors
• Digital/interactive whiteboards
• High-definition television (HDTV)
• Cathode-ray tubes (CRTs)
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Digital whiteboard
HDTV
6-15
Making IT Work for You ~ Using E-Books
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• Enjoy reading on the go
• Many feature subscriptions to newspapers and magazines
6-16
Printers
• Translates information that has
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been processed by the system unit
• Output referred to as hard copy
• Features
• Resolution
• Color
• Speed
• Memory
• Duplex printing
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Printers (Continued)
• Ink-jet printers
• Laser printers
• Personal or shared
• 3D Printers
• Additive manufacturing
Inkjet
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• Other printers
• Cloud printers
• Thermal printers
• Plotters
Laser
3-D Printer
6-18
Audio and Video Devices
• Translates audio information from
the computer into sounds that
people can understand
• Speakers and headsets
• Bluetooth Technology
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• Wireless technology
Headset
• Used to connect to speakers and headsets
6-19
Combination Input and Output Devices
• Multifunctional devices (MFD)
• Cost efficient but lower quality
• Internet telephones
• Known as Telephony and Internet
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Telephony
• Voice-over IP (VoIP)
• Phone Power
• Phone.com
• Skype
Internet telephone
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Making IT Work for You ~ Skype
• Communications tool using VoIP
• www.skype.com
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Skype-to-Skype Communication
Adding a Contact
Getting Started
VoIP
Skype-to-Skype Communication
6-21
Virtual Reality
• Virtual Reality
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• Headgear
• Gloves
6-22
Ergonomics
• Study of human factors
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related to things people
use
• Fit the task to the user to
avoid:
• Eyestrain and headache
• Back and neck pain
• Repetitive strain injury
6-23
Ergonomics (Cont.)
• Portable Computers
• Not set up for Ergonomics
• Laptops
• Tablets
• Tablet Hunch
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• Smartphones
• Blackberry thumb
6-24
Careers In IT
• Technical writers prepare instruction manuals, technical reports, and other
scientific or technical documents
• Typically requires a college degree
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•
•
•
Communications
Journalism
English
Specialization or familiarization
with a technical field
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• Technical writers can expect to
earn $41,000 to $78,000 annually
6-25
A Look to the Future
Augmented Reality Displays
• With wearable augmented reality
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displays, data from your computer and
the Internet will be instantly viewable
• Funding for development from the
government has begun to assist soldiers
and pilots.
• Google has developed a prototype,
“Project Glass”, that is being tested
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Open-Ended Questions (Page 1 of 2)
1. Define input and input devices.
2. Describe the different types of keyboard, pointing, scanning, image capturing, and
Computing Essentials 2015
audio-input devices.
3. Describe output and output devices.
4. Describe the features and different types of monitors and printers.
6-27
Open-Ended Questions (Page 2 of 2)
5. Describe audio and video devices including Bluetooth technology.
6. Discuss combination input and output devices, including multifunctional devices,
Computing Essentials 2015
Internet telephones, and virtual reality headgear and gloves.
7. Define ergonomics, and describe ways to minimize physical discomfort, and
discuss design issues with portable computers.
6-28