Frequency-Meter

由于超声波指向性强，能量消耗缓慢，在介质中传播的距离较远，因而超声波经常用于距离的测量，如测距仪和物位测量仪等都可以通过超声波来实现。利用超声波检测往往比较迅速、方便、计算简单、易于做到实时控制，并且在测量精度方面能达到工业实用的要求，因此在移动机器人研制上也得到了广泛的应用。(Because of its strong directivity, slow energy consumption and long propagation distance in the medium, ultrasound is often used for distance measurement, such as range finder and level gauge, which can be achieved by ultrasound. Ultrasound detection is often fast, convenient, simple in calculation, easy to achieve real-time control, and can meet the requirements of industrial application in measurement accuracy, so it has been widely used in the development of mobile robots.)

MSP430之（1）DSP ADC9851针对MSP430的程序(已调试成功)(The MSP430 (1) DSP ADC 9851 for MSP430 programs (debugging has been successful))

风驰的stm8开发板例程 (program For STm8 )

说明：  网蜂科技开发板CC2530F256实现看门狗定时(Realization of Watchdog Timing by Network Bee Technology Development Board CC2530F256)

类似IE和WordPad的工具条，还有两个极像IE和Wordpad的例子(The toolbar which likes IE and WordPad, and two examples which like IE and Wordpad)

here is a document describing KEy pad decoding techniques and C++ source code as well. it is show 74ls138 role in decoding.. hope it will be helpful. THANKS

自定义数字键盘，IOS编程学习源码，很好的参考资料。(Custom digital keyboard, learning IOS programming source code, a good reference.)

基于单片机计算器,可计算加减乘除，但是不能计算小数(Based on single chip calculator)

DZ60系列单片机部分代码,spi,IIC,CAN(codeing of DZ60,SPI,IIC,CAN)

采用C语言实现的对两个二进制数字实现booth法补码一位乘，按照《计算机组成原理》中的讲解来实现。(Using C language to achieve the of two binary numbers to achieve booth method complement a passenger, in accordance with the computer composition principle to explain to achieve.)