Technology in Action. Chapter Topics. Participation Question. Chapter 8 Summary Questions. Participation Question 8/17/11

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1 Technology in Action Chapter 8 Digital Lifestyle: Managing Digital Data and Devices 1 2 Chapter Topics Changes that have brought us a digital lifestyle The impact of a digital lifestyle Cell phones and smartphones Voice over Internet Protocol Digital media versus analog media Portable media players How to create and watch digital video Ubiquitous computing Participation Question The is the number of times per second the music is measured and converted to a digital value in an MP3 player. A. ripping rate B. sampling rate C. conversion rate D. synchronization rate E. analog rate 3 Participation Question Ubiquitous computing is a phrase that means: A. Ubisoft is the best gaming company. B. Computers have the capability to do everything. C. You should be using a computer to do every task. D. Computers are small enough to be integrated invisibly into the fabric of everyday life. E. You should be selective in how you use computers. Chapter 8 Summary Questions What are the changes that have brought us a digital lifestyle? How has the move to digital information impacted both the business world and your life outside of work? How do cell/smartphone components resemble a traditional computer, and how do they work? 6 1

2 Chapter 8 Summary Questions Why would I use VoIP, and what does it offer that is unique? How is digital media different than analog? What can I carry in a portable media player, and how does it store data? What ways are there for me to create and to watch digital video? What change does ubiquitous computing bring to our lifestyles? Digital Lifestyle: What Are the Advantages of a Digital Format? Sounds and images reproduce perfectly Easy distribution Small devices can hold huge collections of media Easy access to digital information 7 8 Cellular Phones and Smartphones Features include Auto-redial Voice mail Voice-activated dialing Internet access Text messaging Personal information management (PIM) The most full-featured cell phones are categorized as smartphones How Cell/Smartphones Work Analog-to-digital converter chip converts voice sound waves into digital signals. Digital signal processor compresses the signal so it can be sent to another phone. Digital data is transmitted as radio waves. Digital signal processor decompresses incoming calls How Cell/Smartphones Work Base transceiver station Picks up the request for service Mobile switching center Monitors the strength of the signal When signal is weak, orders the next base station to take charge of your call. Cell/Smartphone Hardware Processor (CPU) Coordinates sending data between components Runs the operating system Popular processors include Samsung SC Texas Instruments OMAP Marvell Xscale

3 Cell/Smartphone Operating Systems Translate the user s commands into instructions for the processor Symbian Windows Mobile OS X OpenMoko A free open-source mobile operating system Cell/Smartphone Memory and Storage ROM stores the operating system and the basic programs. Separate internal memory chips store additional applications and data. Flash cards are used for additional storage Cell/Smartphone Hardware Input devices Microphone Keypad Graffiti pad Touch screen Digital camera Output devices Speaker LCD display Cell/Smartphone Software Standard software To-do list Contacts manager Calendar Additional software Microsoft Word, Excel, Outlook, and PowerPoint Games Tools References Cell/Smartphone File Transfer and Synchronization Cell/smartphone files can be transferred to a desktop Flash card readers Cradles Synchronizing updates files on the cell/smartphone and desktop Sync cables Windows Sync Center Wireless transfers IrDA Bluetooth Cell/Smartphone Text Messaging Text messaging Short Message Service (SMS) Sends messages of up to 160 characters Multimedia Message Service (MMS) Sends text, sound, images, and video clips

4 Cell/Smartphone Internet Connectivity Wireless Internet service provider Internet connectivity plans, usually known as data plans Microbrowser software Pages are written in Wireless Markup Language (WML) Cell/Smartphone Internet Connectivity 3G and Enhanced Data Rate for Global Evolution (EDGE) Allow connectivity speeds of up to 1.7 Mbps Conditions must be ideal to get this transfer rate More reliable and less susceptible to interference than WiFi 4G networks are beginning to be tested. Connection speeds of up to 50 Mbps Voice Over Internet Protocol (VoIP) A standard Internet connection can be used to make a phone call Basic requirements for VoIP include: Speakers Microphone Internet connection VoIP provider Allows free or low cost long distance Cell/Smartphone Security Viruses can target cell phones. Antivirus software for mobile devices Symantec McAfee F-Secure Keep your cell/smartphone number private Use a virtual phone number Portable Media Players (PMPs) Small devices that store and play music Many also handle video and still images Many formats for storing files MP3, AAC, and WMA for music DivX, MPEG-4, WMV and XviD for video How much music/video can be stored depends on the PMP s storage space Other Choices for Portable Media Management Some digital camera models Sony Playstation Portable Global positioning systems (GPS)

5 PMP Flash Memory Flash cards can add memory to portable media players Nonvolatile Noiseless Use very little power Hold between 64 MB and 4 GB of data Legal Music Downloads Tethered downloads You pay for the music and you own it You are subjected to restrictions on its use DRM-free downloads No digital rights management on the files Song files can be moved from system to system and shared among users Legal Music Downloads Subscription services Unlimited downloads to your PMP Songs usable only as long as you pay your monthly subscription fee Podcasting Competes with radio and television Podcasts can be information, radio or TV shows, books on tape, audio plays, etc. People can listen when they wish. Can use podcasting software to automatically transfer new content Digital Photography Does not use film See your images instantly Better than cell phone cameras Digital cameras have a higher image resolution Most common file formats are JPEG and RAW Digital Video Digital video can be captured using Digital video cameras Cell/smartphones Webcams Digital video software allows you to Edit digital video Review clips frame by frame Reorder segments Correct color, balance, brightness, or contrast

6 Digital Video Files Common file formats QuickTime MPEG RealMedia AVI Consider codecs when choosing file formats Rules that squeeze audio and video information into less space Getting Your Video Out to Viewers Transfer your video from digital device to computer USB Special sync cable Special devices can transfer video directly to YouTube Choose method of distribution YouTube DVD Webcast Access to Digital Assets Other Devices to Consider Netbooks Run fully featured OSs Weigh less than two pounds Internet tablets Lightweight, very portable No keyboard Notebook computers All capabilities of a desktop May weigh more than other two Sony PlayStation Portable Internet access Stores data files, videos, music, and images Amazon Kindle Stores up to 3,500 e-books Amazon Kindle Ubiquitous Computing Computing that is inseparable from our everyday lifestyle 35 6