Aaliyah Rodriguez Ch. 1 Exercises

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Community College of Denver *

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160

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Computer Science

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Feb 20, 2024

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1. [after §1.2] For each of the following computer system components, identify parallel components in or around a human. a. Input devices = pen b. output devices = speaking c. CPU = brain d. Auxiliary memory = long term memory 2. [after §1.2] For each of the following items, determine whether it is associated with main memory or auxiliary memory. a. CD main or auxiliary? b. Solid-state drive main or auxiliary? c. RAM main or auxiliary? d. Hard drive main or auxiliary? 3. [after §1.2] How many bits in a byte? 8 4. [after §1.2] Write the number 9 using 32-bit binary representation. 00000000 00000000 00000000 00001001 5. [after §1.2] What type of computer memory does C: usually refer to? Hard drive or a solid-state drive 6. [after §1.2] What is “Moore’s Law”? You won’t find the answer to the question in the book, but you can find it on the Internet. (Hint: Gordon Moore was one of the founders of Intel.) Moore’s law states that the number of transistors on a microchip or computer processor doubles every two years. 7. [after §1.3] Rearrange the statements in the left column below to describe an algorithm for a bear gathering honey. Your rearrangement should conform to the diagram in the right column below, with the two arrows emanating from the two repeat statements and pointing to where the respective repetitions begin. Find tree with beehive. Wave paw to disburse bees. If tree is sturdy, climb tree. Insert paw in hive and grab honey. Otherwise, pull tree down. If still hungry and hive has more honey, repeat If still hungry, repeat

8. [after §1.5] What is the difference between source code and object code? Source code is programming language instructions that programmers write, and object code is binary instructions that computers run. 9. [after §1.6] How is bytecode like source code, and how is it like object code? Bytecode is like source code because bytecode is generic so it can run on any type of computer. And bytecode is like object code because bytecode uses a format that works closely with computer hardware, so it runs fast. 10. [after §1.6] What do we call the computer program that converts Java bytecode into a particular type of computer’s machine code? It is called the Java virtual machine, or JVM for short. 11. [after §1.7] The Java compiler comes in several different configurations or Editions. What is the name of the Edition used for mobile devices and controllers? The name of the edition used for mobile devices and controllers is Middleware. 12. [after §1.8] According to BBC News, WikiLeaks is a whistle-blowing website “which has established a reputation for publishing sensitive material from governments and other high- profile organizations.” Provide at least one argument in favor of the work done by WikiLeaks. Provide at least one argument in opposition to the work done by WikiLeaks. One argument in favor of WikiLeaks work is that they are not thinking about the social consequences of what they are writing . One argument in opposition to the work done by WikiLeaks is thou shalt not snoop around in other people’s computer files.

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