Suppose that the system of Figure 4-80 is functioning so that the alarm is activated as soon

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Suppose that the system of Figure 4-80 is functioning so that the alarm is activated as soon as the driver and/or passenger are seated and the car is started, regardless of the status of the seatbelts. What are the possible faults? What procedure would you follow to find the actual fault?


Data from Figure 4-80

IGN DRIV BELTD PASS BELTP 3 +5 V 14 4 2 4 2 5 Z2 Z2 6 6 9 10 Z2 8 12 13 +5V 14 Z2 ||| Z1: 74LS04 Z2: 74LS00

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Digital Systems Principles And Application

ISBN: 9780134220130

12th Edition

Authors: Ronald Tocci, Neal Widmer, Gregory Moss

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