Hspice-输入缓冲器设计网表-Schmitt触发器加反相器-TTL与CMOS电平转换-Hspice模型CMOS35.M-Hspice-input buffer design netlist-Schmitt trigger inverter plus-TTL and CMOS level conversion-Hspice model CMOS35.M

步进电机控制。根据晶振脉冲频率，使用定时器设置时间要求，满足终端控制器高低电平的转换功能。(Stepper motor control. According to the pulse frequency of crystal oscillator, the timer is used to set the time requirement to meet the switching function of the terminal controller.)