... to learn and use, strong function;2. 16 bits high speed CPU, inside FLASH memory, outside USB interface;3 ... operation;5. 40 Subdivision stepper motor driver, 1.8°stepper motor, smooth movement, low noise, high running precision;6. Electrical Clutches ... . Thermostat fan design, start when cooling;8. Eliminate high frequency interference, optional integrated plasma initial positioning and automatic ...