这是一份介绍SIP协议的PPT，详细介绍了SIP协议，可以帮助SIP开发人员理解SIP协议各个消息中的头域，以及应用流程。-this is a point for the sip, it introduces the protocol of sip, it can help for programer for understanding the part

The SuperCom Serial Communication Library is a programer s library used to develop serial communication applications.The functions are grouped logically with respect to their functionality and portability. Some of the SuperCom API functions are spe

Easy USB 51 编程器的上位机的源代码，用VC++编写的，基于USB HID应用的源代码-Easy USB 51 PC programmer' s source code, using VC++ prepared, based on the source code for USB HID