[Cerowrt-devel] living in the future is fun

Dave Taht dave.taht at gmail.com
Tue Mar 18 22:16:36 EDT 2014

back in days of yore, power supplies were big, honking things,
requiring a fan and so on and were usually the most unreliable
part in a box.

Once, I was on a beach in Belize in 2002, and the hotel asked me to
see if I could fix a couple computers. I merely touched one of their
power supplies and the accumulated corrosion made it crumble away
in my hands...

Now the AC-DC conversion problem is in ever smaller sealed bricks,
and DC-DC conversions we  can do from a 12v supply is amazing.

PCs have complex voltage requirements, and I remember being
blown away a few (6?) years back when I saw my first solid state "pico"
DC-2-DC converter which did maybe 30 watts and was a bit
larger than this:


Battery life and power density have also improved dramatically,
3 axis accellerometers are cheap and plentiful, cpus run at ghz
speeds with multiple cores (the first embedded linux box I ever
built (1998) was a 25Mhz 486SX), and run on 10 watts or less,
wifi has gone from 2mbit to 1gbit, ethernet from a gigabit to 40gigE,
memory from megabytes to gigabytes, storage from spinning rust
to flash...

...and "acceptible" internet latency (for people other than us) is
still way above 100ms.


Dave Täht

Fixing bufferbloat with cerowrt: http://www.teklibre.com/cerowrt/subscribe.html

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