Question

高手帮忙翻译一下这段文章吧（在线翻译就免了）

步进电动机由于用其组成的开环系统既简单、廉价，又非常可行，因此在打印机等办公自动化设备以及各种控制装置等众多领域有着极其广泛的应用。
本文介绍的是一种基于单片机的步进电机的系统设计，用汇编语言编写出电机的正转、反转、加速、减速、停止程序，通过单片机、电机的驱动芯片ULN2004以及相应的按键实现以上功能，并且步进电机的工作状态要用相应的发光二极管显示出来。本文内容介绍了步进电机以及单片机原理、该系统的硬件电路、程序组成，同时对软、硬件进行了调试，同时介绍了调试过程中出现的问题以及解决问题的方法。该设计具有思路清晰、可靠性高、稳定性强等特点，通过调试实现了上述功能。
在线翻译的就免了

Answer 1

Stepper motor with its composition as a result of the open-loop system is simple, cheap and very practical, so printers and other office automation equipment and various control devices, and many other fields have a very wide range of applications.

This article describes a microcontroller-based stepper motor system design, assembly language with the preparation of a motor is transferred, reverse, speed up, slow down, stop the procedure, through the microcontroller, motor driver chip and the corresponding ULN2004 The key to achieve the above functions, and stepper motor to use the work of the state of the light-emitting diode display. This article introduced the principle of stepper motor, as well as single-chip microcomputer, the system hardware circuit, the program components, while software and hardware for the debugging, the debugging process at the same time to introduce the problems and the solution to the problem. The clear design, high reliability, stability, etc., through the realization of the above-mentioned functional debugging.