Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!zaphod.mps.ohio-state.edu!mips!daver!wombat.bungi.COM!george@wombat.bungi.COM From: george@wombat.bungi.COM (George Scolaro) Newsgroups: comp.sys.nsc.32k Subject: Re: How does the Dallas Semiconductor chip retain the time? Message-ID: <9105290812.AA05238@wombat.bungi.COM> Date: 29 May 91 15:12:14 GMT Sender: dlr@daver.bungi.com (Dave Rand) Reply-To: pc532@bungi.com Organization: Association for the Prevention of Polar Bears and Kangaroos Lines: 23 [In the message entitled "How does the Dallas Semiconductor chip retain the time?" on May 27, 15:27, Jordan K. Hubbard writes:] > > Not having any specs on my chip (I got it from Steve Liggett), I was > wondering.. > It does use a lithium battery. As per most lithium batteries that are drained at leakage current levels, the lifetime is a nominal 10 years. Either that or it has a non-volatile time offset which it then applies to the time value it obtains from WWV (US standard time transmissions) via its tiny radio receiver :-) P.S. Congrats on fixing your broken traces... best regards, -- George Scolaro george@wombat.bungi.com [37 20 51 N / 122 03 07 W] -- Dave Rand {pyramid|mips|bct|vsi1}!daver!dlr Internet: dlr@daver.bungi.com