Unreliability of laptop computers

[Joel Sherrill]

Angelo Fraietta wrote:
> 
> I am looking for a reference (I can't remember where I read it) that
> laptop computers (running Windows, MacOS, etc..) are not designed to be
> left on for days. I am looking for a justification for using an RTEMS in
> an embedded system instead of running a program on a laptop computer for
> days.
> 
> Can anyone help me out on this one, does anyone know of a reference I
> can use?

I don't have a reference but I can point out a few issues:

  + usually more fragile than hardened 
  + heat dissipation is often poor
  + if the battery is being viewed as a free UPS, then they are
    likely mistaken.  My experience is that leaving a laptop on
    with the battery always in will kill the battery within
    12-18 months.  
  + Probably more expensive and larger than a custom configured
    PC-104 system.

I wish I had a reference.

> --
> Angelo Fraietta
> 
> PO Box 859
> Hamilton NSW 2303
> 
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> 
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> 
> There are those who seek knowledge for the sake of knowledge - that is CURIOSITY
> There are those who seek knowledge to be known by others - that is VANITY
> There are those who seek knowledge in order to serve - that is LOVE
>     Bernard of Clairvaux (1090 - 1153)

-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel at OARcorp.com                 On-Line Applications Research
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