A jet aircraft employs a system for monitoring the rpm, pressure, and temperature values of its engines

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A jet aircraft employs a system for monitoring the rpm, pressure, and temperature values of its engines using sensors that operate as follows:

RPM sensor output = 0 only when speed < 4800 rpm P sensor output = 0 only when pressure < 220 psi Tsensor

Figure 3-56 shows the logic circuit that controls a cockpit warning light for certain combinations of engine conditions. Assume that a HIGH at output W activates the warning light.

(a)* Determine what engine conditions will give a warning to the pilot.

(b) Change this circuit to one using all NAND gates.


Figure 3-56

Temp sensor Pressure sensor RPM sensor PORO W Warning light

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Digital Systems Principles And Application

ISBN: 9780134220130

12th Edition

Authors: Ronald Tocci, Neal Widmer, Gregory Moss

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