89c51 stepper motor drive design. Design requirements. Turned on, the motor does not turn, press the start button, the motor rotation speed 25 r/min, press the button to add a speed increase by a button press, the speed reduction The maximum speed is 100 r/min, the minimum speed of 25 r/min, press the stop button, the motor stopped. Velocity required in the digital tube display.

89c51 stepper motor drive design.doc

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