IOCTL 宏代码解码器。在驱动开发中，经常要用到io控制代码，这个工具可以帮你解释相应的IO控制代码的具体含义。附带了此工具的Win32asm源码。很有用的工...

另一个SCSI 的驱动程序，解压后只有五个文件的，注意看readme。-another SCSI drivers, unpacked only five documents, to see readme.

windows 下usb转rs232端口的驱动程序 -windows under the usb port to RS232 driver

Windows9x/Windows2000/WindowsXP平台下CMOS的读取与修改，慎重使用哦，一切后果自负。-Windows9x/Windows2000/WindowsXP platform CMOS read with the revision, the use of careful, oh, all bear the consequences themselves.

PPP拨号上网协议栈，通过串口编程，实现PPP拨号网络底层协议以及TCP/IP协议，主要用于GPRS，CDMA，电话拨号等通信领域

USB驱动协议的简化版。如果你想打开一个USB管道，你首先要知道这种USB设备的GUID和管理道名称，获取句柄以后就可以使用ReadFile/WriteFile进行读写了！-USB drives a simplified version of the agreement. If you want to open a channel USB, you must first know the GUID USB devices Road names and management, acquisition handle can use it after ReadFile/WriteFile write!

fat file system api in VC

VB环境下PLC和上位机通信的实现 关键词：上位机；MSComm通信；可编程控制器-VB environment PLC and PC communication to achieve Keywords: PC MSComm communication programmable logic controller

一种自动检测和找声卡的VC原码- One kind of automatic detection and looks for the sound card the VC original code

这是一个usb过滤驱动。它也是基于wdm模型的，虽然这个驱动还不够完善，但还是有一定的参考价值。-This is a usb filter driver. It is also based on the wdm model, although the driver is also not perfect, but still has a certain reference value.

End user convenience is the keynote of the universal serial bus (USB). The Plug and Play (PnP) concept has simplified the process of installing certain types of hardware on existing PCs. However, configuration issues continue to plague end users with respect to legacy devices such as serial and parallel ports, keyboards, and mice. Port availability is one of the factors that have historically limited proliferation of peripherals, including modems, answering machines, scanners, and personal digital assistants. USB helps solve these problems by providing a uniform method of connecting a potentially large number of self-identifying devices through a single PC port.