一、數字電子鐘的功能有哪些

數字(zi)電子鐘是一種計時(shi)裝置，它具有時(shi)、分、秒計時(shi)功能和(he)顯示(shi)時(shi)間(jian)功能；具有校時(shi)、整點報(bao)時(shi)、鬧鈴等(deng)功能。

數字電子鐘不(bu)替代指針式鐘(zhong)表(biao)，而且由于它(ta)采用了石英技術，走時精度高、穩定(ding)性(xing)好(hao)，不(bu)需要經常調校，使(shi)用攜帶方(fang)便。因此，在定(ding)時控制(zhi)、自動報時及時間程序控制(zhi)等方(fang)面都得(de)到(dao)廣泛的應用。

二、數字電子鐘的工作原理是什么

數字電子鐘的(de)原理：石英晶(jing)體振蕩器(qi)和六級十(shi)(shi)(shi)分(fen)頻(pin)器(qi)組(zu)成標(biao)準秒(miao)發生電路。其中“非”門用作整(zheng)形以進(jin)一(yi)步改善輸出(chu)波形。利用二(er)-十(shi)(shi)(shi)計(ji)數(shu)(shu)器(qi)的(de)第四(si)級觸發器(qi)Q3端(duan)輸出(chu)脈沖(chong)(chong)(chong)頻(pin)率是計(ji)數(shu)(shu)脈沖(chong)(chong)(chong)的(de)十(shi)(shi)(shi)分(fen)之一(yi)，構造一(yi)級十(shi)(shi)(shi)分(fen)頻(pin)器(qi)。如果(guo)石英晶(jing)體振蕩器(qi)的(de)震蕩頻(pin)率為(wei)1赫茲，則經六級十(shi)(shi)(shi)分(fen)頻(pin)后(hou)，輸出(chu)脈沖(chong)(chong)(chong)的(de)頻(pin)率為(wei)1赫茲，即周(zhou)期為(wei)1秒(miao)，即標(biao)準秒(miao)脈沖(chong)(chong)(chong)。標(biao)準秒(miao)脈沖(chong)(chong)(chong)進(jin)入(ru)(ru)(ru)秒(miao)計(ji)數(shu)(shu)器(qi)進(jin)行六十(shi)(shi)(shi)分(fen)頻(pin)后(hou)，得出(chu)分(fen)脈沖(chong)(chong)(chong)；分(fen)脈沖(chong)(chong)(chong)進(jin)入(ru)(ru)(ru)分(fen)計(ji)數(shu)(shu)器(qi)再經六十(shi)(shi)(shi)分(fen)頻(pin)后(hou)得出(chu)時(shi)(shi)(shi)脈沖(chong)(chong)(chong)；時(shi)(shi)(shi)脈沖(chong)(chong)(chong)進(jin)入(ru)(ru)(ru)時(shi)(shi)(shi)計(ji)數(shu)(shu)器(qi)。時(shi)(shi)(shi)、分(fen)、秒(miao)各計(ji)數(shu)(shu)器(qi)經譯(yi)碼顯示出(chu)來。最(zui)大顯示值(zhi)為(wei)23小(xiao)時(shi)(shi)(shi)59分(fen)59秒(miao)，再輸入(ru)(ru)(ru)一(yi)個脈沖(chong)(chong)(chong)后(hou)，顯示復位成零。