Real time clock ICs

[Early1]

Thirty years ago when I was in the same position as Eng444, at University working on projects for my Bsc in Civil Engineering, I used a stop watch.

A mechanical one at that.

I am realy intrigued as to why any one has gone to so much trouble to re invent the wheel, or egg timer in this case.

I work in instrumentation and RTC are used extensively because we need to log data with a time and date stamp, and if I was going to build a data logger then I would use a RTC, but then I would not build one because I can buy a very good tested and reliable datalogger for £240.

Puzzled

Steve

[Melanie]

Steve

It's 23:58:43 on 28th February... You need a three-minute egg... you're in a panic because PAUSE 180000 exceeds a WORD variable. Do you stop the clock at 12:01:43am or at 00:01:43, and will it be on the 29th February or on the 1st March? Deep down, you KNOW the DS1307 was built by Maxim/Dallas just to provide you with these very answers.

Melanie