2、发响,提示主持人本轮抢答无效,实现报警功能。关键词:八路抢答器;EDA;Multisim10;报警;数显ThedesignofdigitalansweringracerABSTRACTWiththedeepeningofthescientificresearch,meansoflearningscience,technology,knowledgegettingmorenumerous.The figure vies for the answering deviceasatoolhasbeenwidelyusedintheintelligenceandknowledgecompetiti
3、onsituation.Therefore,thedesignofthefigure vies for the answering deviceisbecomingahotspotofresearch.Basedoncommon-usedseriesofintegratedcircuit ,thispaperdesignamulti-functiondigitaldisplayresponder.Theansweringrace’sfunctionincludestiming,counting,andalarming,besidesthebasicfunctionofananswerin