期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2017
卷号：5
期号：2
页码：2500
DOI：10.15680/IJIRCCE.2017.0502123
出版社：S&S Publications
摘要：This Project Electronic Calendar using Microcontroller is an advanced digital calendar, which displaysthe Date, Day and Month over the 16X2 LCD display. The system has a battery backup so that it can run over all thetime even during the power failure. Liquid Crystal Display is provided to display the day, date, month and year. All theabove systems are controlled by the 8051 Microcontroller. The AT895C1 is 8051 Microcontroller from Atmel with onchip flash. The Microcontroller reads the time value from RTC (Real Time Clock) continuously and displays the timevalue on Liquid Crystal Display. Real Time Clock (RTC) uses a 3V Lithium battery so that it runs on the battery evenin power failures. Real Time Clock (RTC) runs perfectly for almost 1000 years. The BQ4802LY is a parallel RTChas a built-in power-sense circuit that detects power failures and automatically switches to the backup supply.Timekeeping operation continues while the part operates from the backup supply.
