《IT职业英语》-电子教案-高巍巍 Unit12 New Technology 12 1 reading.ppt

Unit12 New Technology,Section 1 Reading How Bluetooth Works,2019/5/25,IT职业英语,1,Contents,2019/5/25,IT职业英语,2,Vocabulary,1. Bluetooth n. 蓝牙，蓝牙技术,2019/5/25,IT职业英语,3,Communication,When you use computers, entertainment systems or telephones, the various pieces and parts of the systems make up a community of electronic devices. These devices communicate with each other using a variety of wires, cables, radio signals and infrared light beams, and an even greater variety of connectors, plugs and protocols.,2019/5/25,IT职业英语,4,Connecting ways,Component cables Electrical wires Ethernet cables WiFi Infrared signals,组件电缆,电线,以太网电缆,无线,红外信号,2019/5/25,IT职业英语,5,Bluetooth,Bluetooth is a method of connecting devices . A Bluetooth connection is wireless and automatic, and it has a number of interesting features that can simplify our daily lives.,2019/5/25,IT职业英语,6,The Problem,When any two devices need to talk to each other, they have to agree on a number of points before the conversation can begin. Will they talk over wires, or through some form of wireless signals? If they use wires, how many are required -- one, two, eight, 25?,2019/5/25,IT职业英语,7,More questions,How much data will be sent at a time? For instance, serial ports send data 1 bit at a time, whil­e parallel ports send several bits at once. How will they speak to each other? All of the parties in an electronic discussion need to know what the bits mean and whether the message they receive is the same message that was sent. This means developing a set of commands and responses known as a protocol.,2019/5/25,IT职业英语,8,Exercise 1,True or false 1. ( ) There is only one way that electronic devices can connect to one another. 2. ( ) The art of connecting things is becoming more and more complex every day. 3. ( ) By using Bluetooth，you must connect it to another device with electrical wires. 4. ( ) Bluetooth has a number of interesting features that can simplify our daily lives. 5. ( ) When any two devices need to talk to each other, they have to agree on a number of points before the conversation can begin.,Click to edit company slogan .,Thank You !,。