Digital Fundamentals (11th Edition)
11th Edition
ISBN: 9780132737968
Author: Thomas L. Floyd
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 47P
Design a circuit to fit in the beige block of Figure 3-96 that will cause the headlights of an automobile to be turned off automatically 15s after the ignition switch is turned off, if the light switch is left on. Assume that a LOW is required to turn the lights off.
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Chapter 3 Solutions
Digital Fundamentals (11th Edition)
Ch. 3.1 - When a 1 is on the input of an inverter, what is...Ch. 3.1 - An active-HIGH pulse (HIGH level when asserted,...Ch. 3.2 - When is the output of an AND gate HIGH?Ch. 3.2 - When is the output of an AND gate LOW?Ch. 3.2 - Describe the truth table for a 5-input AND gate.Ch. 3.3 - When is the output of an OR gate HIGH?Ch. 3.3 - When is the output of an OR gate LOW?Ch. 3.3 - Describe the truth table for a 3-input OR gate.Ch. 3.4 - When is the output of a NAND gate LOW?Ch. 3.4 - When is the output of a NAND gate HIGH?
Ch. 3.4 - Describe the functional differences between a NAND...Ch. 3.4 - Write the output expression for a NAND gate with...Ch. 3.5 - When is the output of a NOR gate HIGH?Ch. 3.5 - When is the output of a NOR gate LOW?Ch. 3.5 - Describe the functional difference between a NOR...Ch. 3.5 - Write the output expression for a 3-input NOR with...Ch. 3.6 - When is the output of an XOR gate HIGH?Ch. 3.6 - When is the output of an XNOR gate HIGH?Ch. 3.6 - How can you use an XOR gate to detect when two...Ch. 3.7 - List six process technologies used for...Ch. 3.7 - What does the term volatile mean in relation to...Ch. 3.7 - What are two design entry methods for programming...Ch. 3.7 - Prob. 4CUCh. 3.7 - Write a VHDL description of a 3-input NOR gate,Ch. 3.7 - Write a VHDL description of an XOR gate.Ch. 3.8 - How is fixed-function logic different than PLD...Ch. 3.8 - Prob. 2CUCh. 3.8 - Identify the following IC logic designators: LS HC...Ch. 3.8 - Prob. 4CUCh. 3.8 - What does the term hex inverter mean? What does...Ch. 3.8 - A positive pulse is applied to an inverter input....Ch. 3.8 - A certain gate has a propagation delay time of 6...Ch. 3.8 - Prob. 8CUCh. 3.8 - Prob. 9CUCh. 3.8 - Prob. 10CUCh. 3.9 - Prob. 1CUCh. 3.9 - If two different input waveforms are applied to a...Ch. 3.9 - Prob. 3CUCh. 3 - An inverter performs the NOR operation.Ch. 3 - An AND gate can have only two inputsCh. 3 - If any input to an OR is 1, the output is 1.Ch. 3 - If all inputs to an AND gate are 1, the output is...Ch. 3 - A NAND gate has an output that is opposite the...Ch. 3 - A NOR gate can be considered as an OR gate...Ch. 3 - The output of an exclusive-OR is 0 if the inputs...Ch. 3 - Prob. 8TFQCh. 3 - Once programmed, PLD logic can be changed.Ch. 3 - Fan-out is the number of similar gates that a...Ch. 3 - When the input to an inverter is HIGH (1), the...Ch. 3 - An inverter performs an operation known as...Ch. 3 - The output of an AND gate with inputs A, B, and C...Ch. 3 - The output of an OR gate with inputs A, B, and C...Ch. 3 - A pulse is applied to each input of a 2-input NAND...Ch. 3 - A pulse is applied to each input of a 2-input NOR...Ch. 3 - A pulse is applied to each input of an...Ch. 3 - Prob. 8STCh. 3 - The purpose of a programmable link in an AND array...Ch. 3 - The term OTP means open test point one-time...Ch. 3 - Prob. 11STCh. 3 - Prob. 12STCh. 3 - Two ways to enter a logic design using PLD...Ch. 3 - Prob. 14STCh. 3 - In-system programming of a PLD typically utilizes...Ch. 3 - To measure the period of a pulse waveform, you...Ch. 3 - Prob. 17STCh. 3 - The input waveform shown in Figure 3-76 is applied...Ch. 3 - A combination of inverters is shown in Figure...Ch. 3 - If the waveform in Figure 3-76 is applied to point...Ch. 3 - Draw the rectangular outline symbol for a 4-input...Ch. 3 - Determine the output, X, for a 2-input AND gate...Ch. 3 - Repeat problem 5 for the waveforms in Figure 3-79Ch. 3 - The input wave forms applied to a 3-input AND gate...Ch. 3 - The input waveforms applied to a 4-input AND gate...Ch. 3 - Draw the rectangular outline symbol for a 3-input...Ch. 3 - Write the expression for a 5-input OR gate with...Ch. 3 - Determine the output for a 2-input OR gate when...Ch. 3 - Repeat Problem 7 for a 3-input OR gate.Ch. 3 - Repeat Problem 8 for a 4-input OR gate.Ch. 3 - For the five input waveforms in Figure 3-8219,...Ch. 3 - Draw the rectangular outline symbol for a 4-input...Ch. 3 - Show the truth table for a 3-input OR gate.Ch. 3 - For the set of input waveforms in Figure 3-83,...Ch. 3 - Determine the gate output for the input waveforms...Ch. 3 - Determine the output waveform in Figure 3-8513Ch. 3 - As you have learned, the two logic symbols shown...Ch. 3 - Repeat Problem 17 for a 2-input NOR gate.Ch. 3 - Determine the output waveform in Figure 3-87 and...Ch. 3 - Repeat Problem 19 for a 4-input NOR gate.Ch. 3 - The NAND and the negative-OR symbols represent...Ch. 3 - How does an exclusive-OR gate differ from an OR...Ch. 3 - Repeat Problem 17 for an exclusive-OR gate.Ch. 3 - Repeat Problem 17 for an exclusive-NOR gateCh. 3 - Determine the output of an exclusive-OR gate for...Ch. 3 - In the simple programmed AND array with...Ch. 3 - Determine by row and column number which fusible...Ch. 3 - Describe a 4-input AND gate using VHDL.Ch. 3 - Describe a 5-input NOR gate using VHDLCh. 3 - In the comparison of certain logic devices, it is...Ch. 3 - Prob. 34PCh. 3 - Determine tPLHandtPHL from the oscilloscope...Ch. 3 - Prob. 36PCh. 3 - If a logic gate operates on a dc supply voltage of...Ch. 3 - The variable ICCH represents the dc supply current...Ch. 3 - Examine the conditions indicated in Figure 3-92,...Ch. 3 - Determine the faulty gates in Figure 3-93 by...Ch. 3 - Using an oscilloscope, you make the observations...Ch. 3 - Prob. 42PCh. 3 - Every time the ignition switch is turned on in the...Ch. 3 - What failure(s) would you suspect if the output of...Ch. 3 - Modify the frequency counter in Figure 3-16 to...Ch. 3 - Prob. 46PCh. 3 - Design a circuit to fit in the beige block of...Ch. 3 - Modify the logic circuit for the intrusion alarm...Ch. 3 - Further modify the logic circuit from Problem 48...Ch. 3 - Sensors are used to monitor the pressure and the...Ch. 3 - In a certain automated manufacturing process,...Ch. 3 - Open file P03-52. For the specified fault, predict...Ch. 3 - Open file P03-53. For the specified fault, predict...Ch. 3 - Open file P03-54. For the observed behavior...Ch. 3 - Open file P03-55. For the observed behavior...
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- The gates in the exclusive-OR circuit below have delays of 2 ns for the inverter, 5 ns for the AND gate, and 7 ns for the OR gate. The circuit's input goes from xy = 10 to xy = 11. Determine the signals at the output of each gate from t = 0 to t = 60 ns.arrow_forwardThe shift between the voltage of Phase A and B in a three phase system is O 120 degree O 0 degree O 240 degree O 60 degreearrow_forwardWith a counter 10 lights will be controlled. At the first clock pulse all lights will be ON (1). at the following pulses, lights will be off from inside to outside and the ones that are OFF will not be ON. According to which modulo must this design work ?arrow_forward
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