蓝牙是一个频率为2.45GHz的通用无线电通信接口,它通过一个特殊的网络可以在各种便携设备之间建立起无线连接并进行短程通信。在一个微微网中,每个单元都能同时与其他各单元进行通信。而且,每一个单元可以同时属于几个微微网。蓝牙技术最先是由爱立信公司开始研制的,现在已经得到了诺基亚、IBM、东芝、因特尔及许多其他相关制造厂家的支持。其目的是为了免除在无绳电话 Bluetooth is a universal radio interface with a frequency of 2.45GHz. It has a special network that enables wireless connection and short-range communication among various portable devices. In a piconet, each unit can communicate with other units at the same time. Moreover, each cell can belong to several piconets at the same time. Bluetooth technology was first developed by Ericsson and is now supported by Nokia, IBM, Toshiba, Intel and many other manufacturers. The purpose is to eliminate the cordless phone