习题

1、Discuss the uses of the Internet.  Which activities have you participated in?  Which one do you think is most popular?

2、Explain the differences between the three types of providers.

3、What are the basic elements of an e-mail message?

4、What are the types of discussion groups?  Describe any groups you participate in.

5、Describe the different types of search engines.  What kinds of information does each return? Give an example of the type of search each engine is best for.

1、Explain the difference between general purpose and special purpose applications:

2、What is the difference between a function and a formula?  How is a formula related to what-if analysis?

3、What are presentation graphics programs?  How are they used?

4、Explain the difference between a linked object and an embedded object?  What are the advantages of OLE?

5、What is the difference between an integrated package and a software suite?  What are the advantages and disadvantages of each?

1、What are the advantages of using a desktop publishing program over a word processor?

2、Discuss the aspects of virtual reality and the possibilities for this technology.

3、Discuss the different types of robotics.

4、What are the two areas of AI and describe them.

5、What is a paint program and how does it work?

1、Describe system software.  What are the four types of system programs?

2、Discuss operating systems.  What are the basic functions of every operating system?  What are the three basic operating system categories?

3、Explain the differences and similarities between Windows, Mac OS, and Linux.

4、Discuss utilities.  What are they?  What are the five most essential utilities?  What is a utility suite?

5、Explain the role of device drivers.  Discuss the Add Printer Wizard and Windows Update.

1、Describe the four basic types of system units.

2、Describe the two basic components of the CPU.

3、What are the differences and similarities between the three types of memory?

4、Identify five expansion cards and describe the function of each.

5、Identify and describe four standard ports.

1、Describe the most common types of keyboards. 

2、Describe the different types of pointing devices.

3、Describe the three categories of output devices.

4、Discuss the various types of monitors and printers.

5、What are combination input and output devices?  Describe four such devices.

1、Describe the three most likely successors to the 1.44 MB 3 1/2 inch floppy.

2、What are the three types of hard disk?  What is so disastrous about a head crash.

3、Describe three ways to improve hard disk performance.

4、What are the two most common optical disk formats?  Describe the basic types for each format.

5、Explain the concept of Internet storage.  What are the advantages and disadvantages of this type of storage?

1、What are the six steps of programming?  What part does coding play in program development?

2、Describe CASE tools and OOP.  How does CASE assist programmers?

3、What is meant by “generation” in reference to programming languages?  What is the different between low-level and high-level languages?

4、What is the difference between a compiler and an interpreter?  What role would these tools have in programming with natural languages?

5、What are logic structures?  Describe the differences between the three types discussed in the chapter.

1、8位二进制补码表示的范围是多少？

2、把下列十进制数分别转换成二进制。

          4503、2378、-62、-128

3、把下列二进制数（8位补码表示）转换成十进制数。

          10101、11010110、10010010、1111

4、把下列二进制数转换成十六进制数。

          1101、1011010、100101、11011