Chapter 1

# Chapter 1 - Chapter1 1 ChapterObjectives n...

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Click to edit Master subtitle style Chapter 1 Number Systems and Codes 1

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Chapter Objectives n You should be able to: n Determine the weight of each digit position in the  decimal, binary, octal, and hexadecimal number  systems. n Convert numbers among the four number  systems. n Describe binary coded decimal (BCD) numbers. n Translate alphanumeric data to and from ASCII. 2
Digital versus Analog n Digital n OFF and ON states that can be represented using 0 and 1 (respectively). n Analog n Continuously varying n Examples: temperature, pressure, velocity 4

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Discussion Points n Explain the difference between analog and  digital signals. n Describe some applications for digital  technology. n What are the benefits of using digital systems? n Are there any problems associated with digital  systems? 6
Figure 1- 1 5

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Digital Representations of  n Audio Recording n Audio CD and MP3 players/recorders n Video Recording n DVDs store digital representations of analog  video and audio signals 7
Analog signal voltages and their

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Digital-to-Analog and Back Again 8
Why Digital systems are immune to analog noise 9

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Decimal Numbering System  n 10 possible digits:  0, 1, 2, 3, 4, 5, 6, 7, 8, and  9 n Least-significant position is on the right end n Most-significant position is on the left end n Weighting factor of 10 10
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Chapter 1 - Chapter1 1 ChapterObjectives n...

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