A real-time clock circuit(X1228)is applied to be an hourmeter, data memorizer and alarm in speedometer.
实时时钟电路（X1228）被用作里程表，数据存储器和车速表中的警报。
This is a very practical integrated circuit of the real-time clock in the industrial control, detection and management of production.
在工业控制、检测及生产管理中，这是一种非常实用的实时时钟集成电路。
The paper introduces three functions of the integrated circuit of real-time calendar clock and the interconnection method with single chip computer. The interfacing circuit is also given.
本文具体介绍了三种实时日历时钟集成电路的功能以及与单片机的连接方法，给出了接口电路。
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