FINALf03

# FINALf03 - 1 McGill University Faculty of Engineering...

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1 McGill University DIGITAL SYSTEM DESIGN Faculty of Engineering ECSE-323A FINAL EXAMINATION FALL 2003 (December 2003) STUDENT NAME McGILL I.D. NUMBER Examiner: Prof. J. Clark Co-Examiner: Prof. M. Marin Signature: Signature: Date: December 16, 2003 Time: 2:00 pm INSTRUCTIONS: SEE NEXT PAGE.

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3 Question 1 : CMOS Circuit Technology (10 points) Draw the circuirof a 2 x 4 decoder using only transmission gates and two inverters. The truth table of a 2 x 4 decoder is the following: X Y A B C D 0 0 1 0 0 0 0 1 0 1 0 0 1 0 0 0 1 0 1 1 0 0 0 1 Marking scheme: 5 points for correct approach, 5 points for correct circuit. _________________________________________________________________________________________

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Your Name_______________________________________________________ Question 2 :Boolean Logic Theory (15 points) Express the function G = f8e5 A f8e5 B C + f8e5 A B D + A f8e5 B f8e5 C + A B f8e5 D In terms of the function H = f8e5 X Y + X Z. Assume that f8e5 H is also available if needed. Hint: You may find the Shannon Expansion useful. Marking scheme: 5 points for explaining clearly your approach, 10 points for correct result showing clearly your work. _________________________________________________________________ 4
Your Name_______________________________________________________ Question 3 : VHDL (20 points) (10 points) a) Write a complete VHDL description, using only selected signal assignment statements , of a circuit that implements the Boolean function F = A xor B xor C. Assume that the signals A,B,C as well as their complements are available as inputs. (10 points) b) Write a complete

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## This note was uploaded on 09/16/2011 for the course ECSE 361 taught by Professor Franciscodgaliana during the Winter '09 term at McGill.

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FINALf03 - 1 McGill University Faculty of Engineering...

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