Technology and Application of Single Chip Microcomputer is a book published by Tsinghua University Publishing House. Based on MCS-5 1 series microcontrollers, The Technology and Application of Single Chip Microcomputer mainly introduces the basic structure, working principle, instruction system, programming, system expansion and engineering application of single chip microcomputer. "Single Chip Microcomputer Technology and Application" introduces C5 1 programming technology and its application from the eighth chapter. While explaining the principle of single chip microcomputer, it also introduces the programming method of single chip microcomputer in C language. Especially when explaining some examples, the writing methods of assembly language and C language are given, so that students can compare the writing characteristics of assembly language and C language and learn another language. "Single Chip Microcomputer Technology and Application" is compiled according to the requirements of cultivating high-skilled talents in higher vocational education and the characteristics of running a school. The content is systematic, comprehensive and simple, focusing on the cultivation of practical ability. While teaching the basic working principle, the editor has given many practical projects based on his years of teaching and project development experience, in order to make the projects simple step by step and let students easily master the relevant skills and knowledge.