毕业设计（论文）-基于VHDL的数字是竞赛抢答器的设计与实现.doc

基于VHDL的数字式竞赛抢答器的设计与实现--抢答、计分和报警
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基于VHDL的数字式竞赛抢答器的设计与实现
——抢答、计分和报警
摘要
抢答器作为一种电子产品,早已广泛应用于各种智力竞赛和知识竞赛场合,是竞赛问答中一种常用的必备装置电路结构形式多种多样。
本设计使用VHDL语言设计一个四路数字竞赛抢答器系统。VHDL是一种全方位的硬件描述语言,几乎覆盖了以往各种硬件描述语言的功能,整个自顶向下或自底向上的电路设计过程都可以用VHDL来完成。本文阐述了EDA 的概念和发展、VHDL语言的优点和语法结构并分析讲解了四路数字竞赛的各模块的功能要求、基本原理以及实现方法。本系统的设计就是采用VHDL硬件描述语言编程,,其采用的模块化、逐步细化的设计方法有利于系统的分工合作,并且能够及早发现各子模块及系统中的错误,提高系统设计的效率。抢答器的主要功能模块是是:1、对第一抢答信号的鉴别和锁存功能;2、计分功能。3、数码显示;4、答题限时功能。在本设计主要讲述抢答、计分和警告的功能。
关键词: 抢答器;EDA ;VHDL


Based on VHDL for petition Vies to Answer First the Design andImplementation
-Vies to AnswerFirst, Scoring and Call the Police
Abstract
Responder is a kind of electronic products, has been widely used in all kinds of petition and knowledge contests occasions, is contest answers must have mon device circuit structure forms.
The design of the use of VHDL language design a four way race responder digital is a full range of hardware description language, covering almost the past various hardware description language function, the top-down or bottom-up circuit design process can use VHDL paper expounds the concept and the development of EDA, VHDL language advantages and grammatical structure and Analysis on the four petition each module functional requirements, principle and implementation design of this system is the use of VHDL hardware description language, based on pilation and simulation to achieve, the modular, stepwise refinement design method is helpful for system of division of labour, and early identification of each module and the system error, improve the efficiency of system to answer first the main function module is: 1, the first vies to answer first the differential signal and latch function; 2, score 3, a digital display; 4, the answer time limit this design is mainly about answering, scoring and warning function.
Key words: res