Transcript Document

Technology
in Action
Alan Evans • Kendall Martin
Mary Anne Poatsy
Eleventh Edition
Copyright © 2015 Pearson Education, Inc.
Technology in Action
Chapter 8
Digital Devices and Media:
Managing a Digital Lifestyle
Copyright © 2015 Pearson Education, Inc.
Chapter Topics
• Digital Convergence
• Telephony: Smartphones and Beyond
• Tablets, Netbooks, and Ultrabooks
• Digital Defined
• Digital Media
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Digital Convergence
• Single unifying device
– Media, Internet, entertainment, and telephony
needs
• Smartphones
• Electronics systems in cars
• Digital Living Network Alliance
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Telephony: Smartphones and Beyond
• Telephony
– The use of equipment to provide voice
communications over a distance
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Telephony: Smartphones and Beyond:
Smartphone Basics
• Smartphone functions and features
• Cellular (cell) phones
– Mobile, cellular technology
• Feature phones
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Telephony: Smartphones and Beyond:
Smartphone Components
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Telephony: Smartphones and Beyond:
Smartphone Components (cont.)
• Smartphone
operating systems
– Android OS
– iOS (Apple iPhone)
– Windows 8 mobile
OS
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Telephony: Smartphones and Beyond:
Smartphone Components (cont.)
• Memory stores information and programs
• OS—read-only memory (ROM)
• Data is stored in separate internal memory
chips
• Additional memory
– Micro SD flash cards
– iPhones don’t let you add memory
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Telephony: Smartphones and Beyond:
Smartphone Components (cont.)
• Primary input devices
– Microphone
– Touch pad
– BlackBerry Porsche
– Apple iPhone
• Output devices
– Speaker
– Liquid crystal display (LCD)
– OLED: newer display screen
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Telephony: Smartphones and Beyond:
Smartphone Components (cont.)
• Smartphone OS standard software
– To-do list
– Contact manager
– Calendar
• Web-based software stores for software
applications
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Telephony: Smartphones and Beyond:
How Cell Phone Technology Works
• Cellular network
• Base transceiver station
• Mobile switching center
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Telephony: Smartphones and Beyond:
How Cell Phone Technology Works (cont.)
• Digital Processing
– Sound enters microphone
– Analog-to-digital converter chip converts voice
into digital signals
– Digital signal processor compresses the signal
– Digital data is transmitted as a radio wave
– Digital signal processor decompresses
incoming message
– Amplifier boosts signal
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Telephony: Smartphones and Beyond:
Synchronizing
• Synchronizing (syncing)
• Two main ways to transfer information
– Wired
– Wireless
• Wired solutions
– USB port
– Insert flash card
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Telephony: Smartphones and Beyond:
Synchronizing (cont.)
• Wireless synchronization
• Other providers of wireless
synchronization
– Google Sync
– Amazon Kindle
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Telephony: Smartphones and Beyond:
Synchronizing (cont.)
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Telephony: Smartphones and Beyond:
Text Messaging
• Short message service (SMS)
– Short text messages
– Up to 160 characters
– Convenient and quick
– Uses cell phone network
• Multimedia message (MMS)
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Telephony: Smartphones and Beyond:
Mobile Internet
• Two ways smartphones connect to
Internet
• WiFi is faster
• Cellular network more available
• Wireless Internet service provider
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Telephony: Smartphones and Beyond:
Mobile Internet (cont.)
• Internet usage
– How much data you download and upload
• Internet connectivity plan
– Data plan
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Telephony: Smartphones and Beyond:
Mobile Internet (cont.)
• Estimate monthly
data transfer
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Telephony: Smartphones and Beyond:
Mobile Internet (cont.)
• Two cellular data-transfer standards
– 3G: mobile
– 4G: mobile
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Telephony: Smartphones and Beyond:
Mobile Internet (cont.)
• Connection speed will depend on which
technology you are using
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Telephony: Smartphones and Beyond:
Mobile Internet (cont.)
• Mobile hot spot
• MiFi devices
• Tethering
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Telephony: Smartphones and Beyond:
Smartphone Security
• Viruses
• Antivirus software for mobile devices
– Kaspersky
– McAfee
– F-Secure
• Virtual phone number
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Telephony: Smartphones and Beyond:
VoIP
• Digital phone service
• Technology similar to e-mail
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Telephony: Smartphones and Beyond:
VoIP
• Skype
• Vonage
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Telephony: Smartphones and Beyond:
VoIP (cont.)
• Calls can be placed anywhere you have
Internet access
• Android or iOS phone or tablet
• Free or low-cost long-distance calling
• Portability
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Telephony: Smartphones and Beyond:
VoIP (cont.)
• Drawbacks
– Sound quality and reliability
– Loss of service at home if power is out
– Security risks
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Telephony: Smartphones and Beyond:
VoIP (cont.)
• New Features
– Telephone messages bundled as e-mails
– Caller ID information displayed on TV
– Students can call professor instead of using
personal numbers
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Telephony: Smartphones and Beyond:
Smartphone GPS
• Enhanced 911 program
– Automatically gives precise location
• Built and operated by the U.S. Department
of Defense
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Tablets, Netbooks, and Ultrabooks
Tablets
• Light, very portable devices
• Top-selling tablets
– Apple iPad and Samsung Galaxy
– More than 75 tablets on the market
• Screen size
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Tablets, Netbooks, and Ultrabooks
Tablets (cont.)
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Tablets, Netbooks, and Ultrabooks
Tablets (cont.)
• Smartphone and tablet similarities
– Operating systems
– Processors
– Touch-screen interfaces
– Long battery life
– Similar software applications
– Similar Internet connectivity
– Bluetooth
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Tablets, Netbooks, and Ultrabooks
Tablets (cont.)
• Cannot make cell phone calls
• Can place audio or video phone calls
• HeyWire
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Tablets, Netbooks, and Ultrabooks
Netbooks
• Netbooks
– Traditional OS
– Keyboard
– Weigh 2 pounds or less
– Inexpensive compared with tablets and
ultrabooks
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Tablets, Netbooks, and Ultrabooks
Ultrabooks
• Ultrabooks
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–
–
–
–
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Full-featured computers
Very thin, lightweight computing solution
Don’t have optical drives
Offer SSD drives
Weigh under 3 pounds
Full-size keyboards
13- to 15-inch screens
Examples—Apple Macbook Air and Asus
Zenbook
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Tablets, Netbooks, and Ultrabooks
Ultrabooks (cont.)
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Tablets, Netbooks, and Ultrabooks
Making a Choice
• Guidelines to determine what fits your
personal needs
– Screen size and style of keyboard
– Weight
– Number of devices
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Digital Defined
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Digital Defined (cont.)
• Any kind of information can be digitized
– Sound
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Digital Defined (cont.)
• Digital formats
– Long strings of numbers
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Digital Defined (cont.)
• Analog-to-digital conversion
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Digital Media
• Entertainment industry has become alldigital
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Digital Media:
Digital Publishing
• Electronic text (e-text)
• E-readers
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Digital Media
Digital Publishing (cont.)
• Advantages of e-readers
– Integrated dictionaries
– Note taking and highlighting
– URL links or links to glossary
– Bookmarks
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Digital Media:
Digital Publishing (cont.)
• Software for PC or Apple computers
– Kindle and the NOOK
• Download texts as PDF
• Browser add-ons
– MagicScroll
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Digital Media:
Digital Publishing (cont.)
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Digital Media:
Digital Publishing (cont.)
• Digital formats
– Amazon uses proprietary format: .azw
– Open format: ePub
• Vendors associated with e-reader devices
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Digital Media:
Digital Publishing (cont.)
• Libraries
– Lending e-books and audio books
• Overdrive Media Console
• Lending your own e-books
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Digital Media:
Digital Publishing (cont.)
• Project Gutenberg
– 42,000 free books
– Copyrights have expired
• Self-publishing
– Amazon Kindle Store
– Smashwords
– Lulu
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Digital Media:
Digital Music
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Digital Media:
Digital Music (cont.)
• Sampling rate
• Digital music file formats
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Digital Media:
Digital Music (cont.)
• Quality and compression
• Storage space
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Digital Media:
Digital Music (cont.)
• Ripping songs
• Storage of the player
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Digital Media:
Digital Music (cont.)
• Subscription plans
– Spotify
– Google Play
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Digital Media:
Digital Music (cont.)
• High-speed port
• Cloud services
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Digital Media:
Digital Music (cont.)
• Listening options
– Ports or docks
– Streaming services
– Auxiliary inputs
– Speaker docks
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Digital Media:
Digital Music (cont.)
• Tethered downloads
– Pay for music and own it
– DRM-free music
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Digital Media:
Digital Music (cont.)
• Release new songs immediately
• Radio stations’ Internet sites
• ReverbNation
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Digital Media:
Digital Photography
• Digital cameras
– Capture images
– Convert to digital data
• Record digital video
• Point-and-shoot vs. digital SLR
• Digital Photography Review
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Digital Media:
Digital Photography (cont.)
• Factors that determine image quality
– Quality of lenses
– Image sensor size
– File format and compression
– Color management software
– Resolution
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Digital Media:
Digital Photography (cont.)
• Most common formats
– Raw uncompressed data (RAW)
– Joint Photographic Experts Group (JPEG)
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Digital Media:
Digital Photography (cont.)
• Smartphone cameras
– Improving in resolution
– Smaller image sensors and inferior lenses
– Many features not available
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Digital Media:
Digital Photography (cont.)
• Transferring files from camera
– USB port
– Flash card
– Wireless network connections
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Digital Media:
Digital Photography (cont.)
• Scanners
– Turn sketches and photos into a digital file
– Film negatives and slides
– Quality measured by their resolution
– Optical character recognition: Converts pages
of handwritten or typed text into electronic
files that can be opened and edited with
Microsoft Word
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Digital Media:
Digital Photography (cont.)
• Sharing digital photos
– Facebook
– Picasa
– Digital scrapbook site
– Tablets and smartphones
– Connect iPad wirelessly to TV
• Printing digital photos
– Photo printer
– Photo-printing service
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Digital Media:
Digital Video
• Digital video
– TV
– The Internet (Google Video, YouTube, Vimeo,
Ustream)
– Hulu
– On-demand streaming video (cable, iTunes,
Netflix, Amazon)
– Create your own
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Digital Media:
Digital Video (cont.)
• Digital video-editing software
– Edit digital video
– Review clips frame by frame
– Reorder segments
– Correct color, balance, brightness, or contrast
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Digital Media:
Digital Video (cont.)
• Codec (compression/decompression)
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Digital Media:
Digital Video (cont.)
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Digital Media:
Digital Video (cont.)
• Special authoring software
– Pinnacle Studio HD
– Adobe Encore
• Webcasting
– Broadcasting video live
– Interactive chat
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Digital Media:
Digital Video (cont.)
• HD = high definition
– HDMI connectors
• Single cable
• Carries all video and audio
• Advantages of digital video
– More interactivity
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Digital Media:
Digital Video (cont.)
• DVR
• PVR
• Slingbox
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Chapter 8 Summary Questions
1. How is the trend of digital convergence
seen in the market?
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Chapter 8 Summary Questions
2. What hardware and software comprise a
typical smartphone?
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Chapter 8 Summary Questions
3. How do I synchronize information
between my phone and my computer,
and how do mobile Internet data plans
work?
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Chapter 8 Summary Questions
4. What do I need to keep my smartphone
secure?
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Chapter 8 Summary Questions
5. How does digital telephony support VoIP
services?
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Chapter 8 Summary Questions
6. What distinguishes the performance of
tablets, netbooks, and ultrabooks?
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Chapter 8 Summary Questions
7. What advantage do digital formats have
over analog signals?
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Chapter 8 Summary Questions
8. How is the digital format changing the
way media is created and distributed?
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Chapter 8 Summary Questions
9. How do I work with digital images and
video?
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