I thinks most buspowerd programmers cant be used with laptops... they are 
more of a convenience, i mean you just plug and play... and if you prefer 
them thats -1 cable hanging above your desk... they are cheaper and lots of 
info outher if you like to DIY... personaly i would not like to use a 
wallwart because they heatup and wasting power... you have to remove them 
from the socket everytime you want to turn them off... And most people are 
lazy... so they get left on the wall hanging all the time...

<tachyon_1@email.com> wrote in message 
news:20061202185745.16A9886AE0@cal1-1.us4.outblaze.com...
> Of all the microcontroller programmers out there, I see a preoccupation
> with making a big deal out of the fact that programmer X needs no
> external power supply (wall wart).
> Instead a great deal is made about complicated DC-DC converters and
> charge pumps, and USB power, and serial port power, and even application
> circuit power.
>
> This all makes no sense to me whatsoever. Why bother with all the extra
> complexity, expense, and possible power problems when you can simply hook
> up a $2 wall wart?
> I personally don't give a rip about the supposed inconvenience of a wall
> wart. It's not like I'm programming while riding a motorcycle. I'm quite
> content to use my desk at home or work.
>
> Can someone please explain to me what, if any, advantage there is to not
> using and external power supply? I can't think of any.
>
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