4* 4 key scan control LED display

PC机串口通讯让51内核单片机控制直流电机转动固定的角度，内有51程序和软件仿真-PC 机

利用430单片机内部得DA实现的DDS正弦波形产生程序，可以用在对输出波形稳定性很高的场合-430 single-chip internal use of DA may realize the DDS sine wave shape generation process, can be used in high stability of output waveform of occasions

这个是在参加电子设计大赛时的作品，里面包含了数控稳压电源的设计原理、细节、源码-is participating in the Electronic Design Competition at work, it contains the NC Regulators Power design principle, details OSS, etc.

AT24C512中数据的文件系统化管理的文章-AT24C512 document systematic data management articles

一个简单的利用查表法的反正切和正、余弦函数，在处理速度不快的单片机编程中，这是一个使用的方法。-The use of a simple arctangent look-up table method and positive, cosine function, the processing speed of microcontroller programming unpleasant, this is a method used.

采用UART方式0与LM74通信。 用C8051f020的P0.7作片选，主机通过TXD发送时钟信号，实现同步通信,半双工.RXD 作双向数据线.用六位数码管显示LM74采集的温度值-The use of UART communication mode 0 and LM74. P0.7 used for the C8051F020 chip select, host TXD sent through the clock signal, to achieve synchronous communication, half-duplex. RXD for bi-directional data line. With six digital tube display LM74 temperature collected

在Keil环境下，用1302实现的时钟，用6位数码管显示时间,显示格式00:00:-In the Keil environment, to achieve by 1302 the clock, with six digital display time, display format 00:00:00

Dhry c51源代码,参考-Dhry decoder source code reference

功能描述： 利用AT89S51单片机的T0、T1的定时计数器功能，来完成对输入的信号进行 频率计数，计数的频率结果通过8位动态数码管显示出来。要求能够对2－40KHZ 的信号频率进行准确计数，计数误差不超过2/1-Functional Description: Using AT89S51 MCU T0, T1 timing counter function, to complete the input signal frequency counting, counting the frequency of 8 resulted in the adoption of dynamic digital tube display. Request to the 2-40KHZ signal frequency accurately count, counting error of less than 2/1

数字存储示波器设计-design of digital storage oscilloscopes