电子信息技术专业英语教学课件ppt作者丁宁Unit5DigitalLogic课件.ppt

1.digital [ ?di?itl ] adj.数字的 eg.(1) a digital computer (2) digital circuit (3) digital electronics digit (n.) 数字（0到9中任一数字） analogue (n.) 模拟　 2.binary [? bain?ri ] adj.二进位的 eg.binary states 二进制状态 3.switch [ swi? ] (n.)开关=device for turning on or off (v.)转换=exchange eg.the opening and closing of a switch the switching devices Phrase:switch over 完全改变 switch board 交换台 4.represent [ ?repri ?zent ] vt.代表 representation (n.) 表现，陈述 representative (adj.) 代表的 Phrase: be represented by … 用…表示 5.achieve [ ? ??i:v ] vt.完成, 达到 = complete ; acomplish. fail achievable (a.) 能做成的，能达到的 achievement (n.) 成就，成功，达到，实现 eg. I’ve achieved only half of what I’d hoped to. He achieved success at last. Phrases: achieve success /one’s ambition achieve peace of mind 得到心情的平静 (文中)： be achieved by + n. v.ing 6.pulse [ p?ls ] n.脉冲 ；脉搏 eg.The positive pulses can represent 1 and the negative pulses can represent 0. 7.positive [ ?p?z?tiv ] adj.正的；确定的 positively (ad.) 积极地 positivism (n.) 积极性 8.negative [ ?neɡ?tiv ] adj.负的;v.否定 negatively (ad.) eg.He has a very negative attitude to his business. The manager shouldn’t negative the resonable request. 9.inversion [ in?v?:??n ] n.倒置， 反相 inverse (a.) 相反的 invert (vt.) 倒置，倒转 10.opposite [ ??p?zit ] adj.相反的 (方向或方位上相反) =contrary 表示性质或倾向上相反 same (文中)：An important function of NOT gate is to produce signal inversion or an output signal that is opposite in nature to the input signal. eg. Either you or he has to go there. neither … nor… 既不…也不… not only… but also… 不但…而且… Learn the text: The first paragraph: The phrase “digital electronics ” is used to describe those circuit systems which primarily operate with the use of only two different voltage levels or two other binary state