Using the technique of thyristor and microcontroller to realize soft start and soft stop for motor is a better method that is adopted at present, but its price is more higher.
利用晶闸管、单片机控制技术实现电动机软起动和软制动是目前普遍采用的一种较好的方法，但其成本较高。
This paper mainly studied using STC series microcontroller control PWM signal output so as to realize the speed control of a dc motor control method.
本文主要研究了利用STC系列单片机控制PWM信号输出从而实现对直流电机转速进行控制的方法。
The way to realize serial communication between PC and the microcontroller 80c196 is discussed. RS-485 converted circuits and the design method of communication software are introduced.
介绍了如何在PC机与80c196单片机之间实现多机串行通讯，RS - 4 85转换电路及相应软件的设计方法。
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