这个程序教大家如何再多文档中应用程序的状态条

先输入一个关键字符串，然后输入一个句子 找出关键字符串在句子中位置 -Input a key string, and then enter the string a sentence to identify key positions in the sentence

小喇叭（SPEAKER）-------P0.7 AT89S51单片机应用程序-loudspeaker (SPEAKER )------- P0.7 AT89S51 SCM application procedures

这是一个八月桂花香的程序，请大家指点，-Baruguihuaxiang This is a process, we instruct them, thank you

输入字符串将是区分大小写的开关。。。。。。。。。。。。。。。。。。。。。。。。。

采用模糊控制方式控制直流无刷电机的转速,可使电机的转速稳定性大幅度提高-Fuzzy control method to control brushless DC motor speed, motor speed can significantly improve the stability of

列磁盘目录的程序，文件名，大小，总的个数，大家看看啊。-out the procedure, the file name, size, the total number, we see ah.

软盘格式化程序,实现了对软盘的格式化。-the soft disk formatting,which enables the format of disk

这是关于有刷直流电动机PWM控制方案的源码，上面那个是无刷电动机的PWM控制方案，芯片都是TI公司的TMSLF2407 -This is a brush DC motor on PWM control of the program source, the above is that the PWM brushless motor control program, TI

是关于汇编指令的一个小字典,用起来很舒服,对初学者应该有些帮助的-instructions on the compilation is a small dictionary, used to be very uncomfortable for some beginners should help

在电子技术中，频率是最基本的参数之一，又与许多电参量的测量方案、测量结果都有十分密切的关系，因此频率的测量就显得更为重要。测量频率的方法有多种,其中电子计数器测量频率具有精度高、使用方便、测量迅速，以及便于实现测量过程自动化等优点，是频率测量的重要手段之一。在本次毕业设计中我们选择使用单片机来制作数字频率计，并在实际制作中采用了直接测频法。利用延时产生的时基门控信号来控制闸门，通过在单位时间内计数器记录下的脉冲个数计算出输入信号的频率，最终送入LCD中显示。这样制作出来的频率计不仅可以满足设计题目的参数要求，而且具有了单片机的稳定性和成熟性，且控制能力强，是一种低成本，高可靠的设计方案。-In electronic technology, the frequency is one of the most basic parameters, but also with a number of electrical parameters of the measurement program, the measurement results have a very close relationship between the frequency of measurement, therefore it is even more important. Measurement of the frequency of a number of means, electronic measurement of the frequency counter with high precision, easy to use, rapid measurement, and measurement is easy to realize the advantages of process automation is an important means of measuring the frequency of one. Graduates in this design we have chosen to make use of single-chip digital frequency meter, and used in the actual production of a direct