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Electronic Labs_122

Electronic Labs_122 - Digital Electronics CHAPTER 3 22...

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Unformatted text preview: Digital Electronics CHAPTER 3 22 Questions Draw the logic symbols for a to i (label inputs A, B, C. D and outputs Y): a. 2-input AND gate f. 2-input NOR gate b. 3-input OR gate g. Z-input XNOR gate c. Inverter h. Z-input NAND gate (special symbol) d. 2-input XOR gate i. 2-input NOR gate (special symbol) e. 4-input NAND gate Write the Boolean expression for each gate in question 1. 3. Write the truth table for each gate in question 1. _\l§3\_\n .090 10. ll. 12. 13. 14. 15. Look at the chart in Fig. 3-28. Which logic gate always responds with an output of logical 1 just when the two inputs are unlike (0 and Which logic circuit complements the input? Which logic gate might be called the any but not all gate? Given an AND gate and inverters, draw how you would produce a NOR function. Given a NAND gate and inverters, draw how you would produce an OR function. Given a NAND gate and inverters, draw how you would produce an AND function. Given four 2-input AND gates, draw how you would produce a 3- input AND gate. ’ Given several 2-input NAND and OR gates. draw how you would produce a 4-input NAND gate. Switches arranged in series (see Fig. 3-1) act like what type of logic gate? Switches arranged in parallel (see Fig. 3-3) act like what type of logic gate? Answers to Self Tests 1. a. Lit-L ’+ Tu: .<|| -< 4 Complemented, negated 5. B 6. a :D— b-:r>~ “3D— “‘35)— l l l ...
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