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PWM
- 借助于ADC00808，用滑动变阻器来调节电压，进而转化不同的数字信号，即1，0，-modulate changing regesiter to generate changing voltage,so generate diferent 1 or 0
PWM
- PWM modulate temperature-PWM
modulateddirectsequence
- sequence spread spectrum transmissions (DS-SS) are now widely used for secure communications, as well as for multiple access. They have many interesting properties, including low probability of interception. Indeed, DS-SS transmitters use a
20110409
- 本系统采用C51系列的89S52单片机为核心，通过设置89S52单片机的定时器产生脉宽可调的PWM波【2】，对阀门电机的输入电压进行调制，实现阀门开度的变化，进而实现了对液体流量的控制。单片机通过电磁流量计采集实际流量信号，根据该信号对其内部采用数字PID算法对PWM变量的值进行修改，从而达到对流量的闭环精确控制。-The system uses microcontroller 89S52 C51 series core, 89S52 microcontroller by setting the
stm32_sw_i2c
- 此代码实现的是STM32系列芯片的软件模拟I2C读取光感。-This file use GPIO to modulate I2C to read an lightsensing IC with STM32 series.