circa 1980 Casio with clock, similar to fx8100

12132018, 12:11 PM
Post: #22




RE: circa 1980 Casio with clock, similar to fx8100
(12122018 06:17 PM)grsbanks Wrote: NB: that trick doesn't work unless every year in the interval that's a multiple of 4 is a leap year. Yes, the 28 years cycle will be disturbed in 2100, so we have to correct the calculators date from 1988 to 1976 on monday the 312100. Calculator Benchmark 

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