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Chapter 2

Chapter 2. Introduction to Digital Concepts. Analog Representation. Voltage, current, movement. Digital Representation. Digital watch. Advantages of Digital Techniques. Easer to design. (processing limited values). Information storage is easy. More accuracy. Operation can be programmed.

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Chapter 2

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  1. Chapter 2 Introduction to Digital Concepts

  2. Analog Representation • Voltage, current, movement

  3. Digital Representation • Digital watch

  4. Advantages of Digital Techniques • Easer to design. (processing limited values). • Information storage is easy. • More accuracy. • Operation can be programmed. • Less affected by noise.

  5. Limitations of Digital Techniques • The real world is mainly analog • need to be converted to digital (ADC) • Process the digtal form • Convert the digital output to analog (DAC).

  6. Example

  7. Digital Number System

  8. Representing Binary Quantites

  9. Digital Waveform

  10. Pulse Types • Periodic Pulse • repeat itself at fixed intervals. • A frequency is the rate at which the waveform repeats

  11. Pulse Types

  12. Pulse Types • Non periodic pulse • Does not repeat itself at fixed intervals.

  13. Example

  14. A Digital Waveform Carries Binary Information.

  15. Timing Diagram • Showing the relationship of all waveforms

  16. Data Transfer • Serial Form

  17. Data Transfer • Parallel form

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