Copyright 2011 Pearson Education Inc Publishing as Prentice
Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 1
Technology in Action Chapter 8 Digital Lifestyle: Managing Digital Data and Devices Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 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 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 3
Chapter Topics • • Digital media versus analog media Portable media players How to create and watch digital video Ubiquitous computing Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 4
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 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 5
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 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 6
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. Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 7
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. Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 8
Cell/Smartphone Hardware • Processor (CPU) – Coordinates sending data between components – Runs the operating system – Popular processors include • Samsung SC • Texas Instruments OMAP • Marvell Xscale Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 9
Cell/Smartphone Operating Systems • Translate the user’s commands into instructions for the processor – Symbian – Windows Mobile – OS X – Open. Moko • A free open-source mobile operating system Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 10
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. Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 11
Cell/Smartphone Hardware • Input devices – Microphone – Keypad – Graffiti pad – Touch screen – Digital camera • Output devices – Speaker – LCD display Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 12
Cell/Smartphone Software • Standard software – To-do list – Contacts manager – Calendar • Additional software – Microsoft Word, Excel, Outlook, and Power. Point – Games – Tools – References Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 13
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 – Ir. DA – Bluetooth Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 14
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 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 15
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) Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 16
Cell/Smartphone Internet Connectivity • 3 G 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 Wi. Fi • 4 G networks are beginning to be tested. – Connection speeds of up to 50 Mbps Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 17
Voice Over Internet Protocol (Vo. IP) • A standard Internet connection can be used to make a phone call • Basic requirements for Vo. IP include: – Speakers – Microphone – Internet connection – Vo. IP provider • Allows free or low cost long distance Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 18
Cell/Smartphone Security • Viruses can target cell phones. • Antivirus software for mobile devices – Symantec – Mc. Afee – F-Secure • Keep your cell/smartphone number private – Use a virtual phone number Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 19
Portable Media Players (PMPs) • Small devices that store and play music • Many also handle video and still images • Many formats for storing files – MP 3, AAC, and WMA for music – Div. X, MPEG-4, WMV and Xvi. D for video • How much music/video can be stored depends on the PMP’s storage space Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 20
Other Choices for Portable Media Management • Some digital camera models • Sony Playstation Portable • Global positioning systems (GPS) Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 21
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 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 22
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 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 23
Legal Music Downloads • Subscription services – Unlimited downloads to your PMP – Songs usable only as long as you pay your monthly subscription fee Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 24
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. Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 25
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 format is JPEG Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 26
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 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 27
Digital Video Files • Common file formats – Quick. Time – MPEG – Real. Media – AVI • Consider codecs when choosing file formats – Rules that squeeze audio and video information into less space Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 28
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 You. Tube • Choose method of distribution – You. Tube – DVD – Webcast Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 29
Access to Digital Assets • 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 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 30
Other Devices to Consider • Sony Play. Station Portable – Internet access – Stores data files, videos, music, and images • Amazon Kindle – Stores up to 3, 500 e-books Amazon Kindle Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 31
Ubiquitous Computing • Computing that is inseparable from our everyday lifestyle Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 32
Chapter 8 Summary Questions • What are the changes that have brought us a digital lifestyle? Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 33
Chapter 8 Summary Questions • How has the move to digital information impacted both the business world and your life outside of work? Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 34
Chapter 8 Summary Questions • How do cell/smartphone components resemble a traditional computer, and how do they work? Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 35
Chapter 8 Summary Questions • Why would I use Vo. IP, and what does it offer that is unique? Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 36
Chapter 8 Summary Questions • How is digital media different than analog? Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 37
Chapter 8 Summary Questions • What can I carry in a portable media player, and how does it store data? Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 38
Chapter 8 Summary Questions • What ways are there for me to create and to watch digital video? Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 39
Chapter 8 Summary Questions • What change does ubiquitous computing bring to our lifestyles? Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 40
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher. Printed in the United States of America. Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall Chapter 18 41
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