Two unique sets of self - work controling circuit are the unlocked circuits of both password keyset and electronic key 獨特的兩套獨立工作的控制電路,即密碼鍵盤開鎖電路及電子鑰匙開鎖電路。
Chapter two addresses in details systematic design and related modules of stand - alone door - lock system . the modules include mcu , recognition module , power , lcd , guide voice , i / o decoding circuit , rtc , unlock circuit , power save and anti - interference design 第二部分著重介紹了指紋門禁單機系統(tǒng)的系統(tǒng)總體設(shè)計以及系統(tǒng)中涉及到的各模塊的基礎(chǔ)知識、設(shè)計思路和具體實現(xiàn)。