This paper introduces a ward calling device which is designed using the technology of memory decode indication、switch array input and timeshare test of one by one, and can control as many as sixtyfour beds.
介绍一种采用存储器译码显示、开关矩阵输入分时逐一检测技术设计而成的能对６４张病床进行统一监护的病房呼叫仪。