Abstract: Microcontroller technology is an important course for information engineering and mechanical majors under the background of new engineering. Its related technologies are widely used in various industries. In the knowledge content of the Microcontroller course, the commonly used DMA (Direct memory access) technology is a kind of peripheral equipment and memory, memory and peripheral equipment, or memory and memory when high-speed data exchange does not require CPU (Central Processing Unit) participates in a unique application technology. The explanation and teaching of DMA technology is very difficult for students to be familiar with and use the technology in the classroom of local colleges and universities where the student base is relatively weak. The teaching of DMA technology requires teachers to have a meticulous design of classroom teaching content. This article takes STM32F103C8T6 as an example, designs a teaching experiment board, and makes appropriate reforms and attempts to the teaching content of the DMA technology course, and introduces science and technology into the classroom in the form of Ideological and political education. From a practical point of view, classroom teaching has achieved good results.

Key words: Microcontroller technology, DMA technology, Digital tube drive, Teaching reform