fall2002-exam1-a-soln

fall2002-exam1-a-soln - ECE 206-001 NC State University...

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ECE 206-001 Name:____________________________________________ NC State University Exam 1(A): 24 September 2002 1 1. (18 points) Fill in the missing representations for the following numbers. You must show your work to get full credit. decimal 8-bit two’s complement 8-bit sign-magnitude 8-bit one’s complement (a) -52 11001100 10110100 11001011 (b) 105 01101001 01101001 01101001 (c) -29 11100011 10011101 11100010 (d) 90 01011010 01011010 01011010 n2 n 01 12 24 38 4 16 5 32 6 64 7 128 8 256 9 512 10 1024
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ECE 206-001 Name:____________________________________________ NC State University Exam 1(A): 24 September 2002 2 2. (18 points) (a) [12 pts] Complete a truth table that implements the “next state” function of the state machine that corresponds to this state diagram. The state is represented by a three-bit number, S 2 S 1 S 0 . There is one input signal, X. Each transition is labeled with the value (or values) of X that causes the transition. There are no output signals for this state machine. (b) [6 pts] Draw a combinational logic circuit (AND, OR, NOT) that produces the least significant
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This note was uploaded on 04/18/2010 for the course ECE 109 taught by Professor Bradley during the Spring '08 term at N.C. State.

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fall2002-exam1-a-soln - ECE 206-001 NC State University...

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