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Fall2000Test 2

# Fall2000Test 2 - ECE 2030 Test 2 Fall 2000 Dr Heck This is...

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ECE 2030 Test 2 Fall 2000 Dr. Heck This is a closed book, closed notes test. No calculators are allowed. You have 50 minutes to complete the test. Please show all of your work. Please abide by the Georgia Tech academic honor code. Violations will be handled in the appropriate manner. Name: _________________________________ Problem Possible Points Score 1 10 2 30 3 30 4 10 5 20 Total 100

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Problem 1 (10 Points): a) Implement the following logic using a decoder and OR gates. C B A BC A G , C ) B A ( F + = + = b) Complete the timing diagram for the following circuit. S 1 S 0 OUT D 0 = 0 D 1 = 1 D 2 = 0 D 3 = 1 OUT S 1 S 0 4 to 1 MUX
Problem 2 (30 Points): a) Convert the following 5 bit 2’s complement numbers from binary to decimal. 1101 10110 10011 b) Convert the following numbers from binary to hexadecimal: 10110110 1100011.01 c) Convert the following numbers from decimal to hexadecimal: 25, 15.2 d) Add the following 5-bit unsigned numbers and determine if there is an error. 1 0 1 0 1 0 1 1 1 1 0 0 0 1 0 0 0 1 1 0 1 1 0 1 1 0 1 1 Error?: d) Add the following 5-bit signed numbers and determine if there is an error.

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