3、本电路结构和系统软件的设计。关键词:报警器;AT89S52单片机;红外线发送;红外线接受;12AbstractWiththedevelopmentofsociety and theimprovementofpeople'slivingstandards, ruralurbanization andpersonnelmobity,socialsecuritysituationhasbecomeincreasinglycomplex,theincreasinglyseriouscrimeofthefthashighlightedth
4、eyoungerage,groupcrimeandcrimecharacteristicssuchashighquality,people’ssafetyawarenessisalsogrowing.Suchasfamily, school, factory, office andotherplaces should improvethe anti-theft systemitselfifthedetectedsomeonebrokein,thenthesystemwillsendoutalarmsoundandlightala