该装置用振荡器输出脉冲驱动步进电机,使用预置计数器的步进电机的驱动次数由计数器给定。振荡器的输出通过门电路和 AMP 驱动步进电机。同时,用预置计数器将需要的脉冲数累计计数。当达到给定值时,预置输出就关闭 The device uses the oscillator output pulse-driven stepper motor, the use of pre-counter stepper motor driven by the counter number. The output of the oscillator drives the stepper motor through the gate and AMP. At the same time, use the preset counter to count the number of pulses required. When the setpoint is reached, the preset output is turned off