专业外语教学资料 专业英语－4 digital electronics讲义教材.pptVIP

English in Electric Automation Sunny Shen symmetry [‘simitri] n.对称 label [ leibl ] v. 为…标号 equilibria n.平衡 lever [ li:v?, lev? ] n. 杆，杠杆 latch circuit 锁存电路 memory [ mem?ri ]? n.存储器 depress [ dipres ] v.压下 set [ set] v.置位 calculator [‘k?lkjuleit? ] n.计算器 flip-flop [ flipfl?p ]? n.触发器 glitch [glit? ] n.干扰 synchronize [‘si?kr?naiz ] v.同步 leading edge 上升沿 lagging(trailing) edge [ l?gi? ] 下降沿 inhibit [ inhibit ]? v.禁止 hitherto [.hie?tu:] adv.迄今，至今 toggle [‘t?gl]? v.（来回）切换 Impulse [‘imp?ls] n.推动力 lever actuated switch杠杆传动开关 toggle switch：扳钮开关、拨动开关 frequency devider分频器 HTL=high threshold logic：高阈值逻辑、 DTL=diode transistor logic：二极管晶体管逻辑、 TTL=Transistor-Transistor Logic：晶体管-晶体管逻辑(电路) CMOS= Complementary Metal-Oxide -Semiconductor Transistor：互补金属氧化物半导体、 ECL ＝Emitter-coupled logic：射极耦合逻辑? vice versa 反之亦然 make out of 用...制造出. lower 早期的 Gate and Clocked Flip-Flops：门控和钟控触发器 timing problems定时问题（竞争冒险） cross coupled交叉耦合 gating 选通,开启 gating pulse 选通脉冲 gating signal 选通信号 coupling capacitors 耦合电容 A Historical Example. “Listen my children and you shall hear / Of the midnight ride of Paul Revere…”According to Longfellow ’s poem, Paul Revere was sent riding through the New England countryside by a signal from the bell tower of the Old North Church in Boston. “One if by land and two if by sea. That is, one light was to be displayed if the British forces were advancing toward Concord by the road from Boston, and two lights were to be displayed if they were crossing the Mystic River to take an indirect route. 这是一个历史上的例子，“听吧，我的孩子们，你们将会听到/黑夜里保罗·里维尔的马蹄声…”朗费罗的诗歌中描述，保罗·里维尔将根据波士顿老北教堂钟楼的信号骑马越过新英格兰乡间，“一盏灯是陆地，两盏灯是水路”，也就是说，如果英国军队通过陆地从波士顿开往康珂，就用一盏灯表示；如果他们越过神秘河走捷径的话就用两盏灯表示。 难句参考翻译 Background This is a historical story about the War of Indep