急，请高手帮忙翻译一下毕业论文摘要，不要在线翻译的，谢谢！

Question

随着人们生活水平的不断提高,数字式控制无疑是人们追求的目标之一，它所给人带来的方便也是不可否定的，其中音量控制就是一个典型的例子，但人们对它的要求越来越高，要为现代人工作、科研、生活、提供更好的更方便的设施就需要从数字技术入手，一切向着数字化控制，智能化控制方向发展。
在当代的音响设备中，通常采用电位器进行音量调节。但经常进行音量调节时，又容易使电位器磨损而出现故障。所以，只要将电位器调节由机械调节改为数字式调节，就可以避免因电位器的磨损而引发的一系列故障的出现。
本论文正是针对以上问题，介绍一种用数模转换器DAC0832、二进制可逆计数器74L S193 和555定时器设计的数字式音量调节电路, 受控等级可达256 级, 并且外围电路非常简单。
关键词：音量，电路，数字信号，模拟信号

Answer 1

Along with the people living standard unceasing enhancement, the digital control is one of without doubt goals which the people pursues, it the convenience which brings to the person also is cannot be denied, volume control is a typical example, but the people are more and more high to its request, must work, the scientific research for the modern people, the life, provides a better more convenient facility to need to obtain from the digital technology, all to the numerical control, the intellectualized control direction are developing. In the contemporary acoustic equipment, usually uses the potentiometer to carry on the volume control. When frequently carries on the volume control, also is easy to cause the potentiometer to wear appears the breakdown. Therefore, so long as changes the potentiometer adjustment by the machinery adjustment the digital adjustment, may avoid a series of breakdowns appearance which initiates because of the potentiometer attrition. The present paper is precisely in view of the above question, introduced one kind the digital volume control electric circuit which with d/a converter DAC0832, binary reversible counter 74L S193 and 555 timers designs, is controlled the rank to be possible to reach 256 levels, and the periphery electric circuit is extremely simple.
Key word: Volume, electric circuit, digital signal, simulated signal