fa06-sy-s2 - ECE 2030 Section E Midterm II - Solutions...

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1 ECE 2030 Section E Midterm II - Solutions October 27 th , 2006
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2 1. Implement the following truth table using the components identified below A B C F 0 0 0 0 0 0 1 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 1 1 1 0 0 1 1 1 0 a) A 3-8 decoder & gates. Clearly label the inputs and outputs of the decoder. b) A 4-1 multiplexor & gates. Clearly label the inputs and outputs of the multiplexor. Decoder C B A 000 111 F MUX F 111 ABC 0 1 2 0 000 1 1 1 1 0 0 0
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3 2. Fill in the truth table below. A B C F 0 0 0 1 0 0 1 0 0 1 0 0 0 1 1 0 1 0 0 0 1 0 1 0 1 1 0 1 1 1 1 1 MUX decoder decoder F 0 1 2 3 4 5 6 7 1 0 1 0 A B A C ABC 0 1 2 0 1 2 3 0 1 2 3
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4 3. Implement the following expression in the PLA shown by identifying the connections which should be made with an X and setting the value of the ex-or gate input. B C A ABC F A B C
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5 4. What size decoder will be used in a 16 word by 24 bit ROM (number of inputs and number of outputs)? A 4:16 Sized Decoder will be used.
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This note was uploaded on 08/23/2010 for the course EE 2030 taught by Professor Wills during the Spring '10 term at Georgia Institute of Technology.

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fa06-sy-s2 - ECE 2030 Section E Midterm II - Solutions...

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