real-time-clock chip elect 实时时钟片选信号
real time clock chip 实时时钟芯片
real-time clock-chip 实时时钟芯片
real-time clock chip SD230 实时时钟芯片SD
microprocessor real-time clock chip 微处理机实时时钟芯片
RTCCE Real-Time-Clock Chip Elect 实时时钟片选信号
Completes the temperature survey with keen digit temperature sensor DS18B20, precise calendar clock chip PCF8563 takes the real-time clock source.
用灵敏的数字温度传感器ds18 B 20完成温度测量，精确的日历时钟芯片P CF 8563作为实时时钟源。
Use AT89S51 single chip and real-time clock integrated circuit DS1643, designed an electronic clock system, realized the date, time display and reported time.
利用AT 89s51单片机及实时时钟集成电路ds1643，设计了一个电子钟系统，实现了日期、时间显示及报时功能。
The paper introduces the function, the feature, the principle and the application of hige accuracy real time clock chip RTC4553, it gives hardware and software design.
介绍了高精度实时时钟芯片rtc 4553的功能、特点、原理及应用，并给出了电路原理图和控制程序。
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