该电路由一片四双向模拟开关集成电路CD4066为核心构成。每个电路内部有四个独立的能控制数字或模拟信号传送的开关。当水箱无水时，由于180K电阻的作用，使四个开关的控制端为低电平，开关断开，LED 不发光。随着水位的增加, 由于水的导电特性，使得IC的13脚为高电平，S1接通，LED1点亮。当水位逐渐增加时，LED依次发光指示水位。水满时， LED4发光， 显示水满。同时T1导通， B发出报警声，提示水已满。不需要报警声时，断开开关K即可。 -The circuit consists of a

该实验讲解了如何运用 ST的库来操作I/O口，使I/O口产 生置位(1)和复位(0)信号，从而来控制LED的亮灭。-The experiments explain how to use the library to operate ST I/O ports, so that I/O port generates set (1) and reset (0) signal, thereby to control the LED light off.

A Matlab toolbox to simulate light propagation for monochromatic coherent light through free-form apertures and off rough/free-form surfaces by means of a numerical approximation of the Huygens-Fresnel integral.

将亮的红绿灯圈出来_并在圈内显示红绿灯颜色 图像找到红绿灯位置_判断红绿灯哪个亮 指定位置_最大灰度值_判断亮灭(Circle the bright traffic lights _ and display the traffic lights in the circle Image find traffic light position _ judge which light is green Specify position _ maximum gray value _ judgm