主要讲了c8051f020单片机的PCA频率输出功能实现。

SPI_Master source code

实时数字时钟是一个时钟，准确显示时间。该项目由8051单片机和DS1307的实时时钟芯片。 DS1307是一个良好的和便宜的芯片和在市场上容易获得。 IC DS1307使用32.768kHz的晶振运行的时间精确。 DS1307可以在任一12小时或24小时的格式通过使用I2C协议发送一些特定命令来配置。 I2C协议是在两个线发送数据到像实时时钟芯片，打印机，照片复印机，扫描仪和其他电子设备的几乎128的设备的方法。这个I2C协议的主要的事情是，它的用途只有两个线对整个系统。

embedded linux tools!

The widespread use of embedded systems mandates the development of industrial software design methods, i.e. computer-aided design and engineering of embedded applications using formal models (frameworks) and standardized prefabricated components, much in the same way as in other mature areas of engineering such as mechanical engineering and electronics. These guidelines have been used to develop Component-based Design of Software for Embedded Systems (COMDES). The paper gives an overview of the COMDES framework, followed by a presentation of a generic component types, such as function blocks, activities and function units. The execution of function units is discussed in the context of a newly developed execution model, i.e. timed-multitasking, which has been extended to distributed embedded systems.

关于c++的绘图程序 with pictures show the progress of the load ce shown nboot-About c++ Mapping procedures with pictures show the progress of the load ce shown nboot

minigui listview 源代码，主要是ubuntu下的minigui关于列表的源代码。-minigui listview source code, mainly minigui under ubuntu source code on the list.

相信大家一定可以完的开心，下的书信。请放心使用。-I believe we will be able to Happy End, the next letter. Please be assured that use.

应用背景sim900a为通信核心板，利用Stm32控制开发板，通过AT进行电话的接听和拨打进行编程关键技术sim900a基于Stm32开发板利用AT指令进行拨打电话和接听电话的功能实现，有详细的注释，采用c语言编写

工控modbus协议通讯，vc及delphi编程另外，我怎么老传不上。-modbus protocol

为TI的TSC2301音频芯片所设计的嵌入式linux驱动程序源代码-for TI TSC2301 Audio chip design of embedded Linux driver source code