It's just a paper about stepping motor controlled by single chip microcomputer. Just be brief.

Besides, the 5x series single chip microcomputer was listed in the 1970s, and you can't say it's "".

In recent years, with the development of power electronics technology. . . "At such a time.

Simply explain what system you are working on, there is no need to write the chip composition in such detail. Briefly introduce the stepping motor system.

The control system has been continuously developed and improved, and various performance indexes have been continuously improved. The system has been modularized according to functions and simplified in structure. Widely used in printers, electric toys and other consumer goods, as well as CNC machine tools, industrial control systems, robots, medical devices and other electromechanical products, in all fields of the national economy. -This paragraph can be deleted and put into the text.