Building Ultra-Energy-Efficient Computers Out of Tiny Bar Magnets

Nanomagnet computers could consume one-tenth the power of today’s microprocessors

15 min read
Building Ultra-Energy-Efficient Computers Out of Tiny Bar Magnets

opening illustration Illustration: Emily Cooper

When it comes to computing, we can very easily divide the technologies we use into two distinct categories: speedy electronics and stable magnetics. Electrons, which move fast and interact strongly with one another, are ideal for performing computation. Magnets, by contrast, aren’t known for their speed, but they’re hard to perturb, making them the perfect medium for data storage.

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“Great Capacity!” “Less Latency!”—How Wi-Fi 7 Achieves Both

New features will roll out in some devices by the end of 2022

4 min read
A purple circle with the number 7 in the middle. Curved purple lines radiate out from the circle to the left and right.
Shutterstock

New generations of Wi-Fi have sprung onto the scene at a rapid pace in recent years. After a storied five-year presence, Wi-Fi 5 was usurped in 2019 by Wi-Fi 6, only for the latter to be toppled a year later in 2020 by an intermediate generation, Wi-Fi 6E. And now, just a couple years later, we’re on the verge of Wi-Fi 7.

Wi-Fi 7 (the official IEEE standard is 802.11be) may only give Wi-Fi 6 a scant few years in the spotlight, but it’s not just an upgrade for the sake of an upgrade. Several new technologies—and some that debuted in Wi-Fi 6E but haven’t entirely yet come into their own—will allow Wi-Fi 7 routers and devices to make full use of an entirely new band of spectrum at 6 gigahertz. This spectrum—first tapped into with Wi-Fi 6E—adds a third wireless band alongside the more familiar 2.4-GHz and 5-GHz bands.

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Video Friday: Robot Training

3 min read
A red bipedal robot with wheels for feet and hands stands upright at the top of steps with the city of Philadelphia in the background

Your weekly selection of awesome robot videos

Video Friday is your weekly selection of awesome robotics videos, collected by your friends at IEEE Spectrum robotics. We also post a weekly calendar of upcoming robotics events for the next few months. Please send us your events for inclusion.

IEEE ARSO 2022: 28–30 May 2022, LONG BEACH, CALIF.
RSS 2022: 21 June–1 July 2022, NEW YORK CITY
ERF 2022: 28–30 June 2022, ROTTERDAM, NETHERLANDS
RoboCup 2022: 11–17 July 2022, BANGKOK
IEEE CASE 2022: 20–24 August 2022, MEXICO CITY
CLAWAR 2022: 12–14 September 2022, AZORES, PORTUGAL
CoRL 2022: 14–18 December 2022, AUCKLAND, NEW ZEALAND

Enjoy today’s videos!

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Writing UVM/SystemVerilog Testbenches for Analog/Mixed-Signal Verification

Join this webinar on how to write a UVM testbench for analog/mixed-signal circuits

1 min read
Learn how to write reusable SystemVerilog testbenches for analog/mixed-signal IPs, using standardized UVM components and Scientific Analog's XMODEL! Register for this free webinar now!
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