蓝牙技术ISAS，里面分为四组，分别有WORD文档和PPT，讲述蓝牙的起源，技术发展，功能组件，技术特点，应用及面临的挑战。-Bluetooth technology ISAS, inside divided into four groups, including WORD document and PPT, tells the origin of bluetooth technology development, functional components, technical characteristics, application, and challenges.