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hwk2_solns - ECE 411 – Electronic Design Automation...

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Unformatted text preview: ECE 411 – Electronic Design Automation http://angel.msu.edu/ Instructor: Prof. N IHAR R. M AHAPATRA Solutions to Homework 2 Note: Grading scheme used is given at the end. Problem 2.6 [8 points] (a) [4 points] entity circuit is port( A, B, C, D: in bit; G: out bit); end circuit; architecture internal of circuit is signal E, F: bit; begin E <= A and B; F <= E or C; G <= D and F; end internal; (b) [4 points] entity circuit is port( A, B, C, D: in bit; G: out bit); end circuit; architecture internal of circuit is signal E, F: bit; begin process(A, B, C, D, E, F) begin E <= A and B; F <= E or C; G <= D and F; end process; end internal; Problem 2.8 [6 points] (a) [4 points] A falling-edge triggered D flip-flop with asynchronous active high clear and set. (b) [2 points] Q = ‘0’, because Clr = 1 has priority. Problem 2.13 [8 points ] Time (ns) (+ # of ∆) A B C D E 0 +0 0 0 0 0 0 20 +0 0 0 0 0 1 20 +1 0 1 0 0 1 20 +2 0 8 0 0 1 23 +0 0 8 0 1 1 25 +0 1 8 0 1 1 35 +0 5 8 0 1 1 Problem 2.20 [8 points] (a) [2 points] (b)...
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hwk2_solns - ECE 411 – Electronic Design Automation...

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