In comp.sys.laptops Adam wrote:


Aren't LEDs very-very low power?

Compared to your old filament light bulb, yes. Compared to most
digital electronics they use a lot of power. Presumably some clever
design has gone into the LED backlight to allow them to illuminate
every key with either a small number of individual LEDs, or lots of
high brightness LEDs running far under their rated power. Then the
electronics will be designed to supply this power as efficiently as
possible. But in any case I expect the power consumption would be
noteworthy.

I liked the single LED keyboard light on IBM Thinkpads. Very simple,
but able to make the keyboard labels nicely visible in the dark (as
long as you can find the keys to turn it on ).

Couldn't some nice BIOS engineer just add an option to disable keyboard
backlight? :-)

Get friendly with one of the Coreboot developers?

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