LEDs most certainly can be "partially on", by regulating the current through them rather than operating at a fixed current (and thus fixed voltage). There are ICs that do that, e.g. the On Semiconductor CAT4016, though that is used for indicator LEDs rather than high-power illumination.

LEDs don't even have a specific "fully on" current. They are specified by their manufacturers with a maximum continuous current, but that isn't "fully on". The specifications also give a maximum pulsed current at some particular duty cycle, but that isn't really "fully on" either, because the maximum achievable current may be higher with a lower duty cycle. It's not clear that "fully on" actually has any specific meaning for an LED.

It's less expensive and more efficient to pulse-width modulate LEDs than to adjust the current, so pulse width modulation is definitely the most common way of varying LED intensity.

That's the most impressive part of the announcement, if you ask me. Their store page says that they have a "USB-C to USB-A adapter", which is nothing special, but also a "Micro USB-C to USB-A connecting cable".

I'm eager to hear when this new "Micro USB-C" connector will start appearing on Android phones and tablets.

If you think radio jamming should be legal, your issue isn't with the FCC, it's with US law, specifically 47 U.S.C. 333. Complain to Congress.

Despite that these and other jammers would have some beneficial uses, in my opinion it's a very good thing that radio jamming is illegal (with some exceptions for law enforcement and national security). Legalizing radio jamming in any form would cause far more problems than it would solve.

Lithium iron phosphate (LiFePO4) batteries are considerably more stable than lithium polymer and are not prone to thermal runaway.

They have somewhat lower energy density than lithium polymer, which is probably why they're not very common for phones, tablets, and laptops. They were used in the OLPC.

They are also somewhat common in RC cars and planes, in part due to their voltage (3.2V, so four series cells make 12.8V), and in part due to their higher possible discharge current.

with their Fifth Generation Computer Systems initiative. They demonstrated that just throwing money at the problem doesn't solve it.

We need strong encryption for use by law-abiding citizens, and weak encryption for use by criminals.

TSX was disabled in Broadwell and early Haswell chips due to a bug. Do these new Broadwell-U have the TSX fix?

I have an experimental workload for which TSX would be very helpful, due to a need for atomic reads and writes of unaligned 10-byte data items. As far as I can determine, x86 provides no other way to guarantee atomicity of an unaligned 10-byte read or write.

Wrong. We've produced "...machines that exhibit the agency and awareness of..." a worm: http://www.smithsonianmag.com/...

Perhaps. IEEE Spectrum credits Maruska, as do several other histories of the subject.

http://spectrum.ieee.org/tech-...

Maruska seems to have made the first working violet LED. Some people claim that it doesn't qualify as a blue LED, but as far as I know there's no agreed-upon hard distinction between violet and blue. Maruska developed the right materials and process to make it, even if RCA pulled the plug before he had solved all of the problems necessary for commercialization.

$49 only gets you the Edison module, which is useless by itself. You also need a base board of some kind. The Edison module with the Arduino-compatible base board shown in the photos will set you back $99. Still a pretty good price. 3x more expensive than a Raspberry Pi, but it is a lot more capable.

I'd get more excited about a 64-bit ARM embedded board, but those aren't available yet, other than a $6000 development board from ARM.