DOS下一个完整的大型程序源代码，涉及DOS编程的各个方面-DOS integrity of a large source code, DOS involved in all aspects of programming

android在java层面操作底层系统的源代码，并包含各个硬件的参数，作为编程开发需要了解底层知识的人非常有用-android in the the java level of the source code of the underlying system operation, and contains various hardware parameters, programming developers need to understand the underlying knowledge

通信原理中，AMI码，HDB3码，HDB3-2码的编程和波形图实现-Communication Theory AMI code, HDB3 code, HDB3-2 yards programming and waveform graph to achieve