Development of the Control Module in Civil Air Defense Alarm System
Luo Sheng-min · Microcomputer Information · 2008
This paper designed control system of civil air defense alarm system. Because the SCM' s port number was limited and port driving power is feebleness,this design realizes nixie tube' s Display drive with keyboard management chip MAX7219 and realizes true time display with DS1302,which can economize SCM I/O port and make circuit connection simplicity. Then this paper presents the software flow,divide the realization of the system into different function modules for the purpose of software maintenance and amendment. The paper also gives some antijamming measures.