摘要
介绍由 AT89C5 1单片机、 MC14 6 818芯片、显示键盘等组成的实时时钟 ,该电路能定时报警 ,它走时准确 ,不受停电影响 ,操作方便 ,成本低。并且 ,采用 C5 1编程 ,有编写方便、代码少的特点 。
A real time clock made of AT89C51 microcomputer, MC146818 chip, display and keyboard etc is introduced this circuit gives an alarm when the clock is timed, The clock has many virtues, such as low price, simple operation,exact time and hasn't affect with power cut In addition, this can easy be programmed, few codes in C51 programming
出处
《计算机测量与控制》
CSCD
2002年第3期192-193,196,共3页
Computer Measurement &Control
