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The Essentials of Computer Organization and Architecture, 4th Edition by Julia Lobur, Linda Null

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Answers and Hints for Selected Exercises

Chapter 1

1.  Between hardware and software, one provides more speed, the other provides more flexibility. (Which one is which?) Hardware and software are related through the Principle of Equivalence of Hardware and Software. Can one solve a problem where the other cannot?

3.  One million, or 106

10.  0.75 micron

Chapter 2

1.  a) 1212223

b)  102025

c)  42667

d)  60309

7.  a) 11010.11001

b)  11000010.00001

c)  100101010.110011

d)  10000.000111

16.  a) Signed-magnitude: 01001101

One’s complement: 01001101

Two’s complement: 01001101 Excess-127: 11001100

b) Signed-magnitude: 10101010

One’s complement: 11010101

Two’s complement: 11010110 Excess-127: 1010101

28.  a) Smallest negative: 100000 (–31) Largest positive: ...

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