毕业设计论文—基于单片机技术的八路抢答器设计毕业论文.doc

阚海丹 基于单片机技术的八路抢答器设计 健雄职业技术学院毕业设计（论文） PAGE 30 PAGE 31  PAGE 1 摘要 当今的社会竞争日益激烈，选拔人才，评选优胜，知识竞赛之类的活动愈加频繁，那么也就必然离不开抢答器。而现在的抢答器朝着数字化、智能化的方向发展，这就必然提高了抢答器的成本。 本抢答器通过十分巧妙的设计仅用两块数字芯片便实现了数显抢答的功能，与其他抢答器电路相比较有分辨时间极短、结构清晰，成本低、制作方便等优点，并且还有防作弊功能。因此，我们制作了这款简易八路抢答器摒弃了成本高，体积大，而且操作复杂。我们采用了数字显示器直接指示、自动锁存显示结果、自动复位的设计思想，因而本抢答器具有显示直观，不需要人干预的特点。而且在显示时抢答器会发出叮咚声使效果更为生动。工厂、学校和电视台等单位常常举办各种智力竞赛, 抢答记分器是必要设备。 关键词：单片机；抢答器； 数字芯片 ABSTRACT Todays society increasingly fierce competition, talent selection, selection of superior, knowledge contest activities such as more frequent, so it is inseparable from the responder. And now the responder towards digital, intelligent direction, this will inevitably raise the cost of responder. The responder through the ingenious design with only two digital chip can realize the digital responder function, and other Responder circuit, compared with the resolution time is very short, clear structure, low cost, convenient manufacture and the like, and there are cheating prevention function. Therefore, we made this simple eight way responder to abandon the high cost, large volume, and complex operation. We used a digital display indicator, automatic locking display results, automatic reset design thought, the responder has the advantages of visual display, without the need for human intervention characteristics. But also in the display when the responder will emit buzz sound to make the effect more vivid. The factory, school and television units often held a variety of intellectual competition responder, scoreboard is necessary equipment. Key words Single chip microcomputer; responder; digital chip 目录 1单片机的概述……………………………………………………………………4 1.1单片机发展历程………………………………………………………………4 1.2单片机的分类…………………………………………………………………4 1.3单片机的结构…………………………………………………………………5 1.4单片机原理……………………………………………………………………5 1.5单片机的基本认识……………………………………………………………6 1.6单片机的工作原理……………………………………………………………8 2硬件电路图的设计………………………………………………………………9 2.1抢答器的电路框图……………………………………………………………9 2.2单元电路设计…………………………………………………………………10 2.