【单选题】The child painted the sea blue.
【单选题】对MCS-51单片机时序,下列说法不正确的是:( )。
【单选题】The child painted the sea blue .
【多选题】MCS-51系列单片机的时序单位有四个,分别为( )。
E.
指令周期 【参考答案】MCS-51系列单片机的时序单位有四个,分别为时钟周期(节拍)、状态、机器周期和指令周期。
【简答题】简述MCS-51系列单片机中时序电路中的时钟周期、状态周期、机器周期和指令周期的概念
【简答题】简述MCS-51系列单片机中时序电路中的时钟周期、状态周期、机器周期和指令周期的概念。
【单选题】You are entering an east coast port and see a buoy with a yellow triangle painted on it.This indicates ______.
A.
you are in the vicinity of the ICW
B.
the buoy is a special mark
C.
the buoy is off station
D.
the buoy designates a sharp turn in the channel