题 目：基于单片机的直流电机调速控制器设计

设计要求：

（1）利用单片机、DAC0832及运放实现直流电机的正转

反转、升速、降速控制。

（2）电机运行方式由按键设定。-Title: Microcontroller based DC motor speed controller design

Design requirements:

(1) the use of single-chip, DAC0832 and op amp DC Motor Forward

Reverse, acceleration, deceleration control.

(2) motor operation mode is set by the button.