说明：  介绍了单片机C语言与汇编语言混合编程的两种基本方式，C语言程序中嵌入汇编程序和调用汇编程序的参数传递方法，以及在keil C51中的具体处理方法.
(Introduces the single-chip C language and assembly language programming mix of two basic ways, C language program embedded assembler and parameter passing method calls an assembly program and the specific treatment of the keil C51.)