This is the clock which used highly quality RTC module RT8564NB. This module is I2C controllable. At the time of poweron/reset, the start time received from ntp server. See: http://blogs.yahoo.co.jp/jf1vrr_station/19895596.html (Japanese)
TextLCD.lib@1:7c1d3790f08d, 2011-04-27 (annotated)
- Wed Apr 27 11:03:21 2011 +0000
Rev. 0.01B Add time justify function, sec LED
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