Homework_-4

# Homework_-4 - subtractor One is used to generate the...

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EE 320 Dr. N. El Naga SHEET #4 1. Using proper size of multiplexers, implement the following functions: a) f(A,B,C) = P 0 + P 5 + P 6 + P 7 b) f(A,B,C) = P 3 + P 4 + P 5 + P 6 c) f(A,B,C) = S 1 S 3 S 4 S 6 d) f(A,B,C,D) = P 0 + P 3 + P 5 + P 11 + P 13 + P 15 2. Four sources of information S 1 , S 2 , S 3 and S 4 , each has two outputs , are feeding one destination "D" that has two inputs. By the use of the control signals C 0 and C 1 , the multiplexing circuit selects one of the sources and connects its outputs to the destination inputs. Using the proper multiplexers, design this multiplexing circuit showing all connections. S S S S D Multiplexing Circuit 1 2 3 4 C C 1 0 1

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SHEET #4 3. Design an encoder that will encode the ten decimal digits into their gray code. 4. Using 3/2 3 binary decoder and the necessary gate, implement the following function: f(A,B,C)) = P 0 + P 2 + P 3 + P 6 5. a) Construct the truth table for a full subtractor circuit. b) Two 4-bit data inputs multiplexers are used to realize a full
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Unformatted text preview: subtractor. One is used to generate the difference output D i , while the other is used to generate the output borrow B i+1 as shown below. What are the data inputs to each one of these multiplexers to realize its function. 0 1 2 3 0 1 2 3 X i Y i X Y D i B i i i ? ? X i Y i D i B i+1 Full-Subtractor B i+1 F.S. 6. Describe the function of the 8/3 priority encoder shown below, and show how to build a 16/4 priority encoder using 8/3 encoders and OR gates. 2 SHEET #4 . . . E E I I I 2 2 2 1 2 1 7 o i Priority Encoder 7. Using 8/3 binary encoder and necessary gates, design and implement 8/3 priority encoder shown above. 8. Using 2/4 binary decoders and the minimum number of gates, construct the following: a) 3/8 binary decoder. b) 4/16 binary decoder. 3...
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## This note was uploaded on 02/08/2011 for the course ECE 320 taught by Professor Raminroosta during the Spring '10 term at CSU Northridge.

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Homework_-4 - subtractor One is used to generate the...

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