在MICROCHIP的PIC18F2520上移植UCOSII操作系统，实现基本的EEPROM，串口，PWM，AD等功能，有四个任务。-In MICROCHIP transplantation UCOSII the PIC18F2520 on operating systems, the realization of basic EEPROM, serial interface, PWM, AD and other functions, there are four tasks.