Abstract: Embedded systems based on ARM chips have been widely used in portable devices, industrial control and industrial automation equipment. Portable pneumatic marking machines mainly include keyboard input, LCD display, file system, character coordinate calculation and print control technologies. The μC/0S-Ⅱ operating system based on S3C44BOX can not only meet the design requirements, but also facilitate the design and greatly shorten the development cycle. This article introduces the transplantation, system structure and multi-task design of μC/0S-Ⅱ.
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