1. Chapter 4 Signals Analog and digital Aperiodic and periodic signals
Analog signals
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2. Transformation of Information
Figure 4-1
Transformation of Information
to Signals
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3. Analog and Digital Clocks
Figure 4-2
Analog and Digital Clocks
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4. Analog and Digital Signals
Figure 4-3
Analog and Digital Signals
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5. Periodic Signals  The McGraw-Hill Companies, Inc., 1998 Figure 4-4
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6. Aperiodic Signals  The McGraw-Hill Companies, Inc., 1998 Figure 4-5
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7. Sine Wave  The McGraw-Hill Companies, Inc., 1998 Figure 4-6
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