串口过滤驱动，不占用串口资源，可以随时监视串口

If you look at the various types of requests that come to a device, most of them involve reading or writing data. On occasion, however, an application needs to communicate “out of band” with the driver.

1 程序开发步骤如下 (1) 打开vc，选择菜单项file->new,选择projects选项并建立一个名为"floppy"的win32 console applicatoin工程；创建时注意指定创建该工程的目录； (2) 在工程中创建源文件"floppy.cpp"：选择菜单项project->add to project->files，在选择框中输入自己想要创建的文件名，这里是"floppy.cpp"；在接下来询问是否创建新文件时回答"yes"；然后通过Workspace->FileView->Source Files打开该文件,在其中编辑本程序的源代码；编辑结束后通过菜单项File->Save进行保存； (3) 同(2)步骤再加入文件"floppy.h"； (4) 通过调用菜单命令项build->build all进行编译连接,可以在指定的工程目录下得到debug->floppy.exe程序；现在即可以运行该程序；由于没有命令行参数，故不必在控制台下来运行，直接运行即可； 2 补充说明 这里仅仅给出了编译结果和源程序，没有所创建工程的其他文件。-a step in the development process as follows (1) Open vc, select menu item file-gt; New, choose projects and the establishment of an option called "floppy" win32 console applicatoin works; Attention to create designated to create the directory of the project; (2) create the works Source "floppy.cpp" : Select menu item project-gt; add to project-gt; files, the choice of their own box to create the file name, here is the "floppy.cpp"; the next quest

运动控制卡应用示例程序的动态连接库，对编程开发人员很有用。-control car application software

访问TCP/IP协议栈的vxd例子 -The vxd example for visiting tcp/ip protocol stack

LINUX 下的字符设备，块设备，网络设备的编译源程序-LINUX characters under the equipment, block device, network equipment compiler source

windows 2000/xpWDM设备驱动程序开发光盘代码，绝对正宗。内嵌18个驱动程序，-windows 2000/xpWDM CD-ROM device driver development code, absolutely authentic. Embedded driver ,・・・・ 18

在电脑上怎样发传真-on how the computer fax

串口驱动程序，可替换NT下的串口驱动程序 -Serial dirver which can replace serial driver in NT

硬盘的IDE驱动程序-IDE hard disk driver

wince4.2 触摸屏校准界面源码，开发 wince的朋友可以修改和参考-wince4.2 touch screen calibration interface source code, developers can modify friends wince and reference