VC编写的EAD程序，实现了基本电子元件的绘制及视图的缩放功能-VC prepared by the EAD process, achieve the basic electronic components and the mapping View zoom function

51下的AMBE2000驱动程序，使用IO口模拟驱动-51 under AMBE2000 driver, I use the Analog IO driver

详细介绍了ISP下载线制作的过程，里面有电路图和各种电器的型号参数，该下载线能为很多拥有笔记本的朋友们解除usb转rs232的烦恼。而且成本很低-ISP download cable described in detail the process of production, there are a variety of electrical circuit diagrams and model parameters, the down