本次课程设计使用到了8255及8279两个芯片，两个芯片的工作方式，他们的使用方法，并且结合汇编知识编写代码实现课程设计的要求。-The use of curriculum design to the 8255 and 8279 the two chips, two chips working methods, their use and combination of knowledge of writing code to achieve the compilation of the curriculum design requirements.