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采用c语言设计平键，校核平键的强度，实现人机交互，用户有较大的选择余地(Flat key design using c language, check the strength of flat keys, to achieve human-computer interaction, users have greater choice)

利用FT245BM USB模块做的虚拟示波器，暂时可以达到1M的速率！(FT245BM USB modules make use of a virtual oscilloscope, the time being can achieve a rate of 1M!)

Using FKAttend.dll and FKViaDev.dll for Time Atendance Systems, Aplication for read and write Fingerprint attendance

简单的鼠标画线Vb源代码,有需要的就下载吧。(Simple mouse to draw lines Vb source code, there is a need to download it.)

说明：  在视图区画正弦函数曲线，并且在一个菜单下以对话框形式输入正弦图的起点和终点坐标。(In the view area sine curve drawing, and in the form of a menu in the dialog box enter the start and end the sine map coordinates.)

编写程序，通过设置ios::scientific和ios::fixed标志以定点和科学记数法显示浮点类型数据。(Programming, by setting the ios:: scientific and ios:: fixed flag with fixed-point and scientific notation floating-point data types.)

输入一个矩阵，可以求得该矩阵的逆矩阵，内附解释说明(Enter a matrix, you can obtain the inverse matrix, containing an explanation)

VB中列表分页模型的实例源代码,有需要的就下载吧。(List paging model in VB source code examples, there is a need to download it.)

graph drower MFC with dynamic scaling y-axis

简单易行，很好玩很简单那，我都没费什么功夫(Simple and fun it is very simple)