Abstract:  The programming methods for microcontrollers can be divided into linear programming and modular programming. Linear programming is a more traditional approach characterized by simple program structure and a strong focus on procedural flow. However, it often results in a bloated main program, disorganized functional logic, and poor readability and maintainability of the code. Modular programming emphasizes functional independence and modular invocation, featuring clear program structure as well as improved code maintainability and reusability. In multi-channel temperature control system based on MCU, modular programming can be applied to functional modules such as temperature detection, temperature display, and time-delay operations. This approach ensures that each functional module maintains its operational independence while retaining connectivity with other functions, thereby resulting in a more systematic and rational program design.

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