1.从键盘上输入正、反转命令，转速参数（16级）和转动步数显示在LED显示器上。

显示器上显示：第一位为0表示正转，为1表示反转；第二位0~F为转速等级，第三到第六位设定步数。

2. 单片机依显示器上显示的正、反转命令，转速级数和转动步数进行相应动作，转动步数减为零时停止转动。-1. From the keyboard input is, reverse order, speed parameters (16) and rotating steps displayed in the LED display. On the display: the first is to switch to 0, to 1 for reverse　second 0 ~ F for the speed rating, the third to the sixth set number of steps. 2. Microcontroller is displayed by the monitor, reverse order, and rotational speed of progression steps for the appropriate action steps by zero rotation to stop rotation.