Since the XMOS platform has the instant multithreading and multicore functions of the C programming language, this study first proposed an embedded system for gradual modular instructional methods. This paper proposed an embedded system instructional method based on the XMOS platform, in which learners could learn five modules can all be executed at the same time. Thus, with the application and combination of these five modules, learners could gradually understand single multithreading technology converted to multitasking/multithreading core technology, which can be operated at the same time to simultaneously control the five modules for joint action.