【简答题】We know it's easy to say, but you'll soon start to see and feel the benefits of dieting. Keep ______ it and you will succeed.
【简答题】设计一个同步时序电路,它有两个输入X1和X2,一个输出Z。只有当X1输入3个或3个以上的1后,X2再输入一个1时,输出Z为1,而在同一时刻两个输入不能同时为1。(提示:X,输入3个或3个以上的1可以不连续,只要其间没有X2为1插入即可,一旦Z为1,电路就回到起始状态),要求: (1)用触发器和门电路实现设计; (2)用VHDL语言实现设计。
【单选题】由于航空运输业的普及,导致乘务员紧缺,超劳现象较为普遍,说明乘务员的
【简答题】设计一个组合电路,它的输入为5位二进制数,当其值能被6或7或9整除时输出为1。要求: (1)用逻辑门设计电路; (2)用VHDL设计电路。
【单选题】下列哪种元素是合成甲状腺素的重要原料()
【单选题】It's not easy to see much difference between day and night because ______.
A.
city-dwellers are obliged to adopt a wholly unnatural way of life
B.
the sun was hidden from view by tall buildings
C.
the noise made by traffic never stops
D.
large modern cities are too big to control