7e Chapter 8 Part 1

7e Chapter 8 Part 1 - MSIS 2103 Chapter 8 Part 1 1 Chapter...

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MSIS 2103 Chapter 8 – Part 1 1
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Chapter 8 Digital Lifestyle: Managing Digital Data and Devices
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3 Chapter Topics Changes that have brought us a digital lifestyle The impact of a digital lifestyle Cell phones and smartphones Voice over Internet Protocol
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4 Chapter Topics Digital media versus analog media Portable media players How to create and watch digital video Ubiquitous computing
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A Digital Lifestyle Our life today is characterized by digital computers Because of this, you are impacted Digital technology has crept into your life and will continue to impact you You need to be computer savvy – and our personal computers are digital
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6 Digital Lifestyle: What Are the Advantages of a Digital Format? Sounds and images reproduce perfectly Easy distribution of documents, spreadsheets, music, videos, movies, photos, etc. Small devices can hold huge
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Analog In an earlier time music, telephones, and audio were represented by analog sound waves A middle-C on a piano and you saying “Hello” were both represented with the same type of wave – a form of continuous sine wave
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Sin waves - continuous Saying “Hello” Middle-C on piano
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How Do We “Translate” Analog to Digital? With analog signals, it takes a lot to represent the sound faithfully With digital, we “sample” the sound The more samples per second, the richer the sound That is how we get digital representations of analog sounds
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Analog-to-Digital Representation
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How are Things Different? That is, what did we do differently when all we had was analog representation? What do we do now that we have digital methodologies?
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In US now
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Advantages of Digital Over Analog Can reproduce any sound faithfully over and over again digitally – easy to reproduce A string of binary digits Easy to distribute the same reproduction Can send by email
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Advantages of Digital Over Analog Can reproduce any sound faithfully over and over again digitally – easy to reproduce A string of binary digits Easy to distribute the same reproduction Can send by email
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Digital Accomplishments We can store music and videos on small devices – we could never have done it with analog waves We can store much more data and information Information technology has been growing to give us better, less expensive access to
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Telephony has Shifted from Analog to Digital Telephony: the use of equipment to provide voice communications over a distance Advances in digital technology have produced an increasingly sophisticated set of cell phones and smartphones
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17 Cellular Phones and Smartphones Features include Auto-redial Voice mail Voice-activated dialing Internet access Text messaging
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This note was uploaded on 10/12/2011 for the course MSIS 2103 taught by Professor Dr.kletke during the Fall '08 term at Oklahoma State.

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7e Chapter 8 Part 1 - MSIS 2103 Chapter 8 Part 1 1 Chapter...

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