LED Lighting: Blue + Yellow = White

Giving LEDs the blues was the key to replacing the incandescent bulb

4 min read
LED Lighting: Blue + Yellow = White
Illustration: Frank Chimero

This is part of IEEE Spectrum’s special report: Top 11 Technologies of the Decade

Back in the 20th century, just about the only LED you normally saw was the one that lit up when your stereo was on. By the noughties, tiny light-emitting diodes were also illuminating the display and keypads of your mobile phone. Now they are backlighting your netbook screen, and soon they’ll replace the incandescent and compact fluorescent lightbulbs in your home.

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Xiaomi Builds a Humanoid Robot for Some Reason

CyberOne is a new biped from China, but why does it exist?

3 min read
A black and white humanoid robot lies face down on dirt after appearing to have just fallen

Xiaomi, a large Chinese consumer electronics manufacturer, has introduced a full size bipedal humanoid robot called CyberOne. It’s 177 centimeters in height and weighs 52 kilograms, and it comes with 21 degrees of freedom, with “a curved OLED module to display real-time interactive information.” Nifty! So, uh, its actual purpose is... what exactly?

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Climate-Friendly Ethereum Is One Merge Away

Successful tests set the stage for the cryptocurrency’s switchover in September

3 min read
A large blue lit data center. A figure wearing a white cleanroom suit walks towards a green lit room.

Here pictured is Evobits crypto farm, an Ethereum mining rig in Romania.

Akos Stiller/Bloomberg/Getty Images

The merge is coming, and crypto may never be the same.

“The merge” is shorthand for Ethereum’s rapidly approaching switch from one compute-intensive form of blockchain verification to a much less resource-heavy method. In other words, the cryptocurrency will be switching from proof-of-work to proof-of-stake. This move, which is years in the making, changes how Ethereum maintains consensus—and drastically slashes power consumption.

“Ethereum’s power-hungry days will soon be numbered,” says Terence Tsao, Ethereum protocol developer at Prysmatic Labs. “And I hope that’s true for the rest of the industry, too.”

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Accelerate Time to Market with Calibre nmLVS Recon Technology: A New Paradigm for Circuit Verification

Improve LVS circuit verification productivity in early-stage SoC integration and reduce time to market

1 min read
Accelerate Time to Market with Calibre nmLVS Recon Technology: A New Paradigm for Circuit Verification

One thing is clear…tapeouts are getting harder, and taking longer. As part of a growing suite of innovative early-stage design verification technologies, the Calibre nmLVS Recon tool enables design teams to rapidly examine dirty and immature designs to find and fix high-impact circuit errors earlier and faster, leading to an overall reduction in tapeout schedules and time to market.

Learn more in this technical paper.