🚀 go-pugleaf

I have two questions.

First, I am tring to design a low power data logger. The inputs are four 
logic levels. The processing and output requirments are, on every 
transition of any input I have to timestamp it an record it's level and
the timestamp. Once a day a laptop computer will request all of the data
to be transmitter via RS232. The power requirments are it must run on
UPS/batteries for 24 hours a day for 100 days.

I have been considering a small micro controller running at a low clock
speed. This way I would have less design. Does anyone have any suggestions
on this idea or for an alternate design?

The second question is, What is the voltage and current drawn by
laptops/notebooks running full out with disk access and when in sleep mode.
General ideas as well as specific examples would be help full. I am going
to try and stay with the bigger name brands Compac, Epson, IBM, etc.

Oh, and if anyone knows about the enviromental specs. of laptops/notebooks
I am looking for them to withstand 0-55 degrees celcius and 95% humidity.
Is this a dream or are they available?

I have a tight deadline so if anyone can help please contact me or post 
as soon as possible.

Thanks,
Tim
mcginn@crl.aecl.ca