Design and Application of Embedded Linux System Design and Application of Embedded Linux System Abstract: With the rapid development of embedded Linux system, embedded Linux has developed into an important branch of embedded operating system. This paper introduces the design of embedded Linux and several popular embedded Linux systems. Keywords: Embedded Linux I. Introduction Embedded system (Embedded Systems) is a computer system that integrates operating system and functional software into computer hardware system according to application requirements, so as to achieve software and hardware integration. Embedded system appeared in the late 1960s. It was originally used to control electromechanical telephone switches. Now it has been widely used in many fields such as industrial manufacturing, process control, communication, instrumentation, automobiles, ships, aviation, aerospace, military equipment, consumer products, etc. The number of embedded systems far exceeds that of various general-purpose computer systems: the core CPU of computer system has an annual global output of about 2 billion, of which more than 80% are used in various highly specialized embedded systems. Generally speaking, any dedicated hardware and software system with a microprocessor can be called an embedded system. Compared with general computing platforms, embedded systems often have the characteristics of single function, small size, low power consumption, high reliability, good scalability, high software and hardware integration, and relatively low computing power. For many years, there was no operating system in embedded devices. There are two main reasons: first, devices such as washing machines, microwave ovens, and refrigerators only need a simple control program to manage a limited number of buttons and indicator lights, and there is no need to use an operating system; second, it often has only limited hardware resources, which are not enough to support an operating system. However, with the development of hardware, embedded systems have become more and more complex, and many functions have been gradually added to the original control program, and many of these functions can be provided by the operating system. Therefore, in the late 1970s, embedded operating systems (Embedded Operating Systems) appeared. Its appearance greatly simplified application design, and can effectively guarantee software quality and shorten the development cycle. Simple ES generally does not use an operating system and only contains some control processes, but as embedded operating systems increase in complexity...
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