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Lecture Operating systems: Internals and design principles (6/E): Chapter 13 - William Stallings

Chapter 13 - Embedded systems. In this chapter, we examine one of the most important and widely used categories of operating systems: embedded operating systems. The embedded system environment places unique and demanding requirements on the OS and calls for design strategies quite different than that found in ordinary operating systems. | Chapter 13 Embedded Systems Dave Bremer Otago Polytechnic, N.Z. ©2008, Prentice Hall Operating Systems: Internals and Design Principles, 6/E William Stallings These slides are intended to help a teacher develop a presentation. This PowerPoint covers the entire chapter and includes too many slides for a single delivery. Professors are encouraged to adapt this presentation in ways which are best suited for their students and environment. 1 Roadmap Embedded Systems Characteristics of Embedded Operating Systems eCos TinyOS We begin with an overview, followed by a look at various file organization schemes. Although file organization is generally beyond the scope of the operating system, it is essential to have a general understanding of the common alternatives to appreciate some of the design tradeoffs involved in file management. The remainder of this chapter looks at other topics in file management. 2 Embedded System One of the most important and widely used categories of operating . | Chapter 13 Embedded Systems Dave Bremer Otago Polytechnic, N.Z. ©2008, Prentice Hall Operating Systems: Internals and Design Principles, 6/E William Stallings These slides are intended to help a teacher develop a presentation. This PowerPoint covers the entire chapter and includes too many slides for a single delivery. Professors are encouraged to adapt this presentation in ways which are best suited for their students and environment. 1 Roadmap Embedded Systems Characteristics of Embedded Operating Systems eCos TinyOS We begin with an overview, followed by a look at various file organization schemes. Although file organization is generally beyond the scope of the operating system, it is essential to have a general understanding of the common alternatives to appreciate some of the design tradeoffs involved in file management. The remainder of this chapter looks at other topics in file management. 2 Embedded System One of the most important and widely used categories of operating systems Hardware and software designed to perform a dedicated function Tightly coupled to their environment Often, embedded systems are part of a larger system or product, E.G. antilock braking system in a car. One of the most important and widely used categories of operating systems: embedded operating systems. “Embedded system. A combination of computer hardware and software, and perhaps additional mechanical or other parts, designed to perform a dedicated function. In many cases, embedded systems are part of a larger system or product, as in the case of an antilock braking system in a car.” 3 Real Time Embedded systems are tightly coupled to their environment. This imposes real-time constraints by the need to interact with the environment. required speeds of motion, required precision of measurement, required time durations. Often, embedded systems are tightly coupled to their environment. This can give rise to real-time constraints imposed by the need to interact with the environment. .