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Unformatted text preview: Chapter 7 Instructor's Manual http://22.214.171.124/...5AD%25E8%25A8%2588%2F%25E8%25A8%2588%25E7%25AE%2597%25E6%25A9%259F%25E7%25B5%2584%25E7%25B9%2594%2F%25E7%25BF%2592%25E9%25A1%258C%25E8%25A7%25A3%25E7%25AD%2594%2FIM-Ch7.PDF+site%3A24web.tw&hl=en&gl=us[2/6/2010 7:53:37 PM] This is the html version of the file http://www.24web.tw/edu/Eric/%E8%A8%88%E7%AE%97%E6%A9%9F%E7%B5%84%E7%B9%94%E8%88%87%E8%A8%AD%E8%A8%88/%E8%A8%88%E7%AE%97%E6%A9%9F%E7%B5%84%E7%B9%94/%E7%BF%92%E9%A1%8C%E8%A7%A3%E7%AD%94/IM- Ch7.PDF . Google automatically generates html versions of documents as we crawl the web. Page 1 Chapter 7 Instructor's Manual ______________________________________________________________________________ Chapter Objectives Chapter 7, Input/Output and Storage Systems, provides a detailed overview of I/O fundamentals, bus communication and protocols, and typical external storage devices, such as magnetic and optical disks, as well as the various formats available for each. DMA, programmed I/O, and interrupts are covered as well. In addition, various techniques for exchanging information between devices are introduced. RAID architectures are covered in detail, and various data compression formats are introduced. This is a very large chapter, but instructors need not lecture on all topics. This was written with the intention of students reading the material. Many of the topics (such as disk layouts and logical formats) can easily be read and understood by the student. In addition, some material is more FYI in nature. However, there are some topics which should be covered in lecture. Lectures over the material in Chapter 7 should focus on the following points: • Amdahls's Law. This law characterizes the interrelationship of the components within the system. Understanding the speedup potential in a system is particularly important for the concepts in Chapter 10, Performance. • I/O architectures. I/O control methods (programmed I/O, interrupt-driven I/O, DMA, and channel I/O) and I/O bus operation are important topics in helping students understand the system as a whole. • RAID. RAID devices allow for redundancy (in different ways) in storing data, thus offering improved performance and increased availability for systems employing these devices. Levels 0 through 6, in addition to some hybrid systems, are introduced. • Data compression. Data compression not only helps economize on disk usage, but it reduces transmission time in data communications as well. This section contains some mathematically challenging concepts and should probably not be left for the student to read on his or her own. An instructor could also lecture over sections 7.4 (Magnetic Disk Technology), 7.5 (Optical The Essentials of Computer Organization and Architecture Linda Null and Julia Lobur Jones and Bartlett Publishers, 2003 Chapter 7 Instructor's Manual http://126.96.36.199/...5AD%25E8%25A8%2588%2F%25E8%25A8%2588%25E7%25AE%2597%25E6%25A9%259F%25E7%25B5%2584%25E7%25B9%2594%2F%25E7%25BF%2592%25E9%25A1%258C%25E8%25A7%25A3%25E7%25AD%2594%2FIM-Ch7.PDF+site%3A24web.tw&hl=en&gl=us[2/6/2010 7:53:37 PM]http://74....
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- Spring '10
- disk, access time, Seek time, Rotational delay