Dale - Computer Science Illuminated 138

# Dale - Computer Science Illuminated 138 - a NOT b AND c NOR...

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Exercises 111 12. Give the three representations of a NOR gate and say in words what NOR means. 13. Why are there no logic diagram symbols for the NAND and NOR gates? 14. Draw and label the symbol for a three-input AND gate; then show its behavior with a truth table. 15. Draw and label the symbol for a three-input OR gate; then show its behavior with a truth table. 16. What is used in a gate to establish how the input values map to the output value? 17. How does a transistor behave? 18. Of what is a transistor usually made? 19. What happens when an electric signal is grounded? 20. What are the three terminals in a transistor and how do they operate to produce an output? 21. How many transistors does it take for each of these gates?
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Unformatted text preview: a. NOT b. AND c. NOR d. OR e. XOR 22. Draw a transistor diagram for an AND gate. Explain the processing. 23. Draw a transistor diagram for an OR gate. Explain the processing. 24. How can gates be combined into circuits? 25. What are the two general categories of circuits and how do they differ? 26. Draw a circuit diagram corresponding to the following Boolean expression: (A + B)(B + C) 27. Draw a circuit diagram corresponding to the following Boolean expression: (AB + C)D 28. Draw a circuit diagram corresponding to the following Boolean expression: A ± B + (B+C) ±...
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