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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 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. • Less affected by noise.
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).
Pulse Types • Periodic Pulse • repeat itself at fixed intervals. • A frequency is the rate at which the waveform repeats
Pulse Types • Non periodic pulse • Does not repeat itself at fixed intervals.
Timing Diagram • Showing the relationship of all waveforms
Data Transfer • Serial Form
Data Transfer • Parallel form