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Unformatted text preview: BYU, ECEn/CS 124, W2012 Homework #2 Page 1/2 CS/ECEn 124, W2012 Homework #2 Digital Logic (Ch 3) Name Section Score / 38 Questions: Answers: 1. (4 points) How many select lines and how many output lines do the following multiplexers have? a. 32-input multiplexer b. 16-input multiplexer c. 5-input multiplexer d. 3-input multiplexer # of input lines # of select lines # of output lines 32 16 5 3 2. (10 points) Compute the following bitwise logical/arithmetic operations given the following 2’s complement values of A and B ? A = 0111 0101 0111 0110 B = 0001 1100 0101 0000 a. NOT A b. NEG B c. A OR B d. A AND B e. A NOR B f. A NAND B g. A XOR B h. A ADD B i. A – B j. A AND B OR NOT A a. b. c. d. e. f. g. h. i. j. 3. (3 points) Give a truth table for each of the following equations: a. f = b a + b. f = b a + c. f = b a × Note: + = OR, × = AND, – = NOT a b f a b f a b f 4. (4 points) What is the Boolean expression for the following combinatorial circuit? (Use ~, × , and + for NOT, AND, and OR respectively.) BYU, ECEn/CS 124, W2012...
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This document was uploaded on 02/08/2012.
- Winter '09