AT90S8515控制4线两相步进电机。想做AVR控制步进电机的网友可以看看。...

51单片机P2口接4*4键盘的行线和列线；红灯亮时进行频率输入；绿灯亮时进行占空比输入；频率值暂定在100到60KHZ之间；输入频率和占空比时要输够六位整数，不够的在前面补0；占空比以百比数（0-100）形式存在。-51 Singlechip P2 mouth then 4* 4 keyboard line and column line red light when the frequency of input green when the input duty cycle frequency value is tentatively scheduled for between 100 to 60KHZ input frequency and duty than enough to lose six integers, not enough to fill in front of 0 duty cycle than a few hundred (0-100) form.

嵌入式系统已经广泛应用于各个科技领域和日常生活的每个角落，由于其本身的特性，使得我们很难发现它的存在。甚至一些从事嵌入式系统开发的科技人员也只知单片机，不知道嵌入式系统。本节从嵌入式系统的定义开始，阐述嵌入式系统的含义、特点等，以使读者加深对嵌入式系统的理解。 -Embedded systems are widely used in various fields of science and technology and everyday life in every corner, due to its own characteristics, making it very difficult for us to discover its existence. Embedded systems and even some involved in the development of scientific and technical personnel are also only single-chip, embedded systems do not know. This section from the beginning of the definition of embedded systems, embedded systems on the meaning, characteristics and so on, in order to enable readers to deepen their understanding of embedded systems.

SD卡的驱 动资料，讲述了SD卡的SPI驱动模式-SD Card Driver information about the SD card SPI-driven model

用汇编语言实现数据采集,数据显示,数据通信(2543,7279等芯片),是我做的毕设题目-assembly language for data acquisition, data, data communications (2543,7279 chip), I do BI located topic

89C52单片机的底层代码,包括A/D,D/A转换,键盘,LED显示等-89C52 the underlying code, including A/D, D/A conversion, keyboard, LED display

80C52参考频率计程序，包含中断和定时器典型应用代码段-Reference 80C52 Cymometer procedures, including suspension and timer typical application code segment

0802液晶 0802液晶-0802 LCD 0802 LCD

这是一些关于PID控制程序和模糊PID程序，当，仿真时，可以借鉴！希望能给大家带来帮助！-This is some information on PID and fuzzy PID control process, when the simulation, you can learn from! I hope everyone can help!

介绍了液晶显示模块基本原理及其技术特性，与单片机的进行接口的具体电路，同时给出了其编程方法和程序代码．-Introduced the basic principles of liquid crystal display module and its technical characteristics, and MCU interface to the specific circuit, at the same time gives the methods and procedures of its programming code.

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