Chapter 11 - I/O management and disk scheduling. After studying this chapter, you should be able to: Summarize key categories of I/O devices on computers, discuss the organization of the I/O function, explain some of the key issues in the design of OS support for I/O,. | Operatin g Systems: Internals and Design Principle s Chapter 11 I/O Management and Disk Scheduling Seventh Edition By William Stallings Operating Systems: Internals and Design Principles An artifact can be thought of as a meeting point—an “interface” in today’s terms between an “inner” environment, the substance and organization of the artifact itself, and an “outer” environment, the surroundings in which it operates. If the inner environment is appropriate to the outer environment, or vice versa, the artifact will serve its intended purpose. — THE SCIENCES OF THE ARTIFICIAL, Herbert Simon External devices that engage in I/O with computer systems can be grouped into three categories: Devices differ in a number of .