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单片机部分控制电路如图,编程实现发光二极管按D1D2---D3D4----D5D6----D7D8--D5D6---......D1D2----循环点亮。请在横线上填空,完成程序 解: #include void delay(){ ; for(i=0;i<=60000;i++); } void main(){ unsigned char j=0 P1=0xfc; delay() While(1){ For(j=0;j<3;j++){ P1=( |0x03); // 使P1左移2位 ,并在低位补两个1。 delay(); } For(j=0;j<3;j++){ P1=(P1>>2|0xc0); delay(); }}}
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【单选题】— Hello! 34776855. — Hello! _____ [ ]
A.
This is Tom.
B.
I'm Tom.
C.
Who are you?
D.
Are you Tom?
【单选题】My parents often talk about ______. [ ]
A.
Tom and she
B.
you and Tom
C.
Tom and you
D.
he and I
【简答题】阅读理解。 Tom arrived at the bus station quite early for Paris bus. The bus for Paris would not leave until five to twelve. He saw a lot of people waiting in the station. Some were standing in line(排队), o...