关于抢答器的摘要翻译 急

来源：百度知道 编辑：UC知道 时间：2024/05/08 15:43:41
抢答器作为一种电子产品，早已广泛应用于各种智力和知识竞赛场合，是竞赛问答中一种常用的必备装置；从原理上讲，它是一种典型的数字电路，其中包括了组合逻辑电路和时序逻辑电路．电路结构形式多种多样，可以利用简单的与非门构成，也可以利用触发器构成，也可以利用单片机来完成．利用单片机来设计抢答器，使得结果更简单，功能更优越。
本设计是基于单片机控制的六路抢答器，利用单片机的定时器/计数器定时和记数的原理，将软、硬件有机地结合起来，使得系统能够正确地进行计时，同时使数码管能够正确地显示时间。用开关做键盘输出，扬声器发生提示。同时系统能够实现：在抢答中，只有开始后抢答才有效，如果在开始抢答前抢答为无效；抢答限定时间和回答问题的时间可在1-99s设定；可以显示是哪位选手有效抢答和无效抢答，正确按键后有音乐提示；抢答时间和回答问题时间倒记时显示，满时后系统计时自动复位及主控强制复位；按键锁定，在有效状态下，按键无效非法。

Answer devices as an electronic products, has long been widely used in a variety of occasions, intelligence and knowledge competitions, quiz contests are essential in a commonly used device; from the principle, it is a typical digital circuit, including a combination of logic circuits and sequential logic circuit. Circuit structure of a variety of forms, can make use of simple and non-gate structure can also be used to trigger composition, can also be used to complete single-chip microcomputer. Answer the use of single-chip design, and makes the results more simple function better.
　　The design is based on the six-way SCM Answer, and the use of single-chip timer / counter timing and number of the principles in mind, the hardware and software combine to make the system time correctly, while the digital control able to correctly display the time. Switch the keyboard to do with output, speaker prompted occurred. At the same time, the system can be realized: In the Answer, only aft