Design of automatic bell system
Abstract
With the increasing popularity of household appliances and people life rhythm speeding up, people for the dependence of the electrical appliances to further improve, demand for electric timing also increases further. Time switch ringing the bell can be used in factories, schools and so on need to regular the occasion of ringing the bell. Time switch the use of ringing the bell can achieve energy saving, safety, convenience, etc. This paper introduces a k
自动打铃系统设计-11690字.docx