# hw8 - Name Homework eight(Final practice EECS 203 Due 5...

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Name: Homework eight (Final practice) EECS 203 Due 5 June 2009 You may not use books, notes, or calculators when completing this exam. Please show your work. 1. (20 pts.) Answer the following questions. (a) Dr. Wright claimed that he can build a general computer if provided with many 2:1 MUXes and wires. Do you believe him and why? (b) When using the adder-subtractor on two’s complement numbers, what is the overﬂow condition and why? (c) What are the two’s complement and sign-magnitude representations for -76 and 58? (d) Explain why a 32-bit adder circuit built from FullAdders might perform calculations really slowly. 2. (10 pts.) Find a minimal two-level expression for the following function using whichever technique is most convenient to you. Show your work. f ( a , b , c , d ) = a ( c ( b + d )) + ac 3. (10 pts.) MUX and DMUX Design. Implement the following logical functions: (a) (5 pts.) Implement this function using a 4:1 MUX. f

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hw8 - Name Homework eight(Final practice EECS 203 Due 5...

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