钥匙提醒系统/本作品以HOLTEK单片机为控制核心，采用无线发射接收方式再人们进出门时进行钥匙检测,对钥匙防落融于本系统控制设计之中，且增加了关门即时提醒功能。汇编-Key reminder system/the work to HOLTEK microcomputer control center with radio transmitting and receiving mode and then when people go into the key test of the key def