Dale - Computer Science Illuminated 76

Dale - Computer Science Illuminated 76 - asleep or awake....

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Thought Questions 49 25. Perform the following hexadecimal subtractions. a. ABC ± 111 b. 9988 ± AB c. A9F8 ± 1492 26. Why are binary numbers important in computing? 27. A byte contains how many bits? 28. How many bytes are there in one word of a 64-bit machine? 29. Why do microprocessors such as pagers have only 8-bit words? 30. Why is important to study how to manipulate fixed-sized numbers? Thought Questions 1. Exercise 3 asked you to classify π as one of the options. π does not belong in any of the categories named; π (and e) are transcendental numbers. Look up transcendental numbers in the dictionary or in an old math book and give the definition in your own words. 2. Complex numbers are another category of numbers that are not discussed in this chapter. Look up complex numbers in a dictionary or an old math book and give the definition in your own words. 3. Many everyday occurrences can be represented as a binary bit. For example, a door is open or not open, the stove is on or off, the dog is
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Unformatted text preview: asleep or awake. Could relationships be represented as a binary value? Discuss the question giving examples. 4. The digital divide puts those that have access to technology on one side and those that do not on the other. Do you feel that it is the right of everyone to have access to technology? 5. It will cost a great deal of money to erase the digital divide. Who do you think should be responsible for paying the cost? 6. Having access to technology is not enough; people must be taught to use the technology they have. How would you define computer literacy for each of the following groups of people? high school students in an industrialized country kindergarten teachers in an industrialized country college graduates in an industrialized country students in sub-Saharan Africa college graduates in sub-Saharan Africa government officials in the Andes ?...
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