In traditional teaching, it has always been a big problem for teachers to teach solid geometric structures. To solve this problem, this paper proposes to develop a teaching auxiliary model that uses the μC/OS-Ⅱ embedded operating system to control the three-dimensional LED luminous dot matrix to display solid geometric figures. With the help of the multi-tasking and real-time nature of the operating system, complex tasks such as function selection, data transmission and dot matrix display are completed. The teaching content is sent to the luminous dot matrix model for three-dimensional display through the matching upper computer control software. At the same time, the FAT file system is embedded in the operating system to support data reading and writing through the TF card. The entire system has been verified
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