Based on the single

周立功zlg7290键盘显示控制芯片详解-Week Ligong zlg7290 keyboard display control chip Detailed

DS18B20程序(LJD-SY-5100单片机程序) 控制DS18B20完成芯片的控制和数据传输-DS18B20 procedures (LJD-SY-5100 single-chip process) control chip DS18B20 complete control and data transmission

80C51单片机中利用蜂鸣器实现电子琴的源程序。包含蜂鸣器的datasheet。-80C51 single-chip buzzer realize the use of the source organ. Contains the buzzer datasheet.

4x4矩阵键盘电子琴把“单片机系统”区域中的P1.0 端口用导线连接到“音频放大模块”区域中的SPK IN 端口上； （2． 把“单片机系统“区域中的P3.0－P3.7 端口用8 芯排线连接到“4X4 行列式键盘”区域中的C1－音乐产生的方法； 一首音乐是许多不同的音阶组成的，而每个音阶对应着不同的频率，这样我们就可以利用不同的频率 的组合，即可构成我们所想要的音乐了，当然对于单片机来产生不同的频率非常方便，我们可以利用单片 机的定时/计数器T0 来产生这样方波频率信号，因此，我们只要把一首歌曲的音阶对应频率关系弄正确即 可。现在以单片机12MHZ 晶振为例，例出高中低音符与单片机计数T0 相关的计数值如下表所示-err

使用8031单片机加载FPGA的源代码,为FPGA的加载提供了另一种方便的方法.-use FPGA 8031 load the source code for the FPGA loaded provide another convenient way.

单片机控制GPS ，有详细的电路图和代码，希望可以帮助有需要的pymen -SCM GPS, has detailed schematics and code, hoping to help those in need pymen

There are many different (and often confusing) terms associated with clock-based devices. This application note attempts to clarify these terms, and hence serves as a comprehensive reference on clock terminology. This application note can be divided into two sections. The first section describes and distinguishes between various clock sources available today. The second section defines and distinguishes between various parameters used to describe clocks. This section also provides methods of measuring some of these parameters.

串口双工通讯，单片机上用LCD显示主机发送的数据，同时可以通过单片机的按键向主机发送多种数据-Duplex serial communication, single-chip LCD display with a host to send data at the same time can be key to the host MCU to send multiple data

硬盘控制电路以及原程序Demo,知识是属于全人类的。能将自己的成果无条件与人共享是伟大和受人尊敬的，同时也是一件幸福的事。 由于我想得到幸福和受人尊敬，所以我也开放我的工作成果。（其实也不算什么工作成果，匆匆忙忙用了一晚写的，见笑了。 在此感谢邵春伟同志，我在研究ata协议的时候参考了他写的程序） -drive control circuit and the original procedure Demo, knowledge is the whole of mankind. The results can unconditionally with the people sharing is great and respected, but also a happy thing. I want happiness and well respected, so I open my work. (What is not a work haste spent a night writing, a laughing stock. This would SHAO Chun-wai comrades, I studied ATA agreement for the reference to the writing process)

单片机的程序，欢迎探讨-Microcomputer Program, welcomed the study