求翻译：本文介绍了基于单片机实现直流电机控制，各组成电路的功能及实现，控制系统的原理及控制软件的实现，主要是通过对硬件电路的设计和控制软件的开发而设计的。为了实现直流电机测控数字化和精确可测控性，采用PWM 控制技术，利用双桥驱动芯片L298控制直流电机的起停及调速问题，设计了两个直流电机的硬件电路与控制程序，主要由模拟电源、控制电路、显示电路、驱动电路四部分组成。模拟电源提供各个芯片电源、数码管、驱动L298所需电压；显示电路用于显示电动机转动时的速度大小及正反转所表示的代码。是什么意思？

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This article describes the Microcontroller-based control for DC motors, the composition, the function of a circuit and the achievement of the control system works and control software was achieved primarily through the hardware circuit design and control of software development and design. In order

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