数码显示抢答器的设计.doc

数码显示抢答器的设计 【摘要】【关键字】 抢答器 数码显示 抢答电路 定时电路 二十一世纪已经进入了信息社会的崭新时代，信息社会的基础是电子技术，它是一门实践性很强的技术学科。随着电子技术的发展它已深入到生活的各个领域，抢答器也不例外。 抢答器已经被普遍使用，而且各个方面的技术已经很成熟。随着数码管的问世，科技的迅猛发展，将数码显示应用到抢答器已经是发展的必然，也是对抢答器功能的一种完善和补充。此次设计以智力和知识竞赛为背景，设计一个有能够优先显示抢答者组号并发出响声提醒，同时封锁其他组的抢答功能的抢答器。此次设计我们通过调查研究可以通过单片机或利用数模电知识的电子技术来完成。单片机虽然具有智能化、可编程等优点但又考虑到单片机造价高，编程难等问题，我们决定用分立元器件来完成。我们利用分块完成，综合连接的方法分别对抢答部分，控制部分，音响部分，直流稳压电源部分进行设计。通过调试，每块功能都没问题后，最后连接组装，综合调试，最终整个设计可以实现主持人复位清零，第一抢答信号的鉴别和锁存，显示抢答者组号，发出蜂鸣声等功能，满足设计要求。 【Abstract】【Key Words】： rushes to reply implement digital display rushes to reply the circuit timing circuit The twenty-first century has already entered brand-new information society times，The information society is based on electronic technology，It is very strong one practicality technology subjects.It already goes deep into each fields arriving at life with the development of electron technology , rush to reply an implement neither exception. Rush to reply an implement the technology by be put into use commonly, and each aspect is already already very mature.With the fact that the numerical code coming out , science and technology swiftness and violence develop,one kind applying digital display to the necessity rushing to reply the implement already is to develop , being also to rushing to reply the implement is functional improves and perfects and supplements. Background designing that the contest is with intelligence and knowledge this time, the preferential display designing that one has being able to rushes to reply the person group number and effluence noise warn of , blockade at the same time rushing forming other to reply functional rushing replies an implement. Come to be completed the technology this time, designing that we can pass the monolithic machine by investigation and study or making use of digital-analog electricity knowledge electron. The monolithic machine thinks that cost of construction is high to monolithic machine although having merit such as intellectualized , weave Cheng