| The embedded system has a history of more than 30 years from appearing to the present. It has already been applied to each field that the mankind works and lives extensively, for traditional industrial control , communication of the network , POS/ATM machine, IC card,etc Such numerous and consumption and medical treatment and health care electronic equipment as roof box,digital TV, WebTV , network refrigerator ,network air conditioner of the family field ,etc. In addition have it in media's cell-phone , pocket computer , palmtop computer , application in such respects as the navigating device ,etc. of year of train. The research and development direction of embedded operating system and digitized products concentrates on wireless handheld mobile device , intelligent network terminal device , embedded network safety devices mainly. The main research work of this text is as followsThis text, to the application of ARM microprocessor and ARM microprocessor series, the application selecting type and the length of order and data type of the systematic structure of ARM series , ARM microprocessor have done the comparatively detailed introduction. Analyse the hardware design principle of embedded ARM CPU system , including the interface circuit design principles of such devices as flash , 8019 network cards , touch-sensitive screens ,etc. and ARM CPU. At the same time also the theory operation principle and they of chatting the interface chip are connected with pin of CPU exhaustivly.This text has listed the implementation method of Linux equipment driver and basic step in detail , provide realizing the course detailedly of the touch-sensitive screen driver and MTD equipment driver, and the method to dispose the kernel and LINUX and transplant.Finally, this text discussed the function application of Linux intellectual communication terminal station briefly, have analysed the system structure , authentication course and frame structure of network safety certification agreement 802.1X in detail.
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