Tag: computer science

Tiny Graphene Microchips Could Make Your Phones & laptops Thousands of Times Faster, Say Scientists

Graphene strips folded in similar fashion to origami paper could be used to build microchips that are up to 100 times smaller than conventional chips, found physicists – and packing phones and laptops with those tiny chips could significantly boost the performance of our devices.

New research from the University of Sussex in the UK shows that changing the structure of nanomaterials like graphene can unlock electronic properties and effectively enable the material to act like a transistor.  

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The scientists deliberately created kinks in a layer of graphene and found that the material could, as a result, be made to behave like an electronic component. Graphene, and its nano-scale dimensions, could therefore be leveraged to design the smallest microchips yet, which will be useful to build faster phones and laptops. 

SEE: Hiring Kit: Computer Hardware Engineer (TechRepublic Premium)

Alan Dalton, professor at the school of mathematical and physics sciences at the University of Sussex, said: “We’re mechanically creating kinks in a layer of graphene. It’s a bit like nano-origami.  

“This kind of technology – ‘straintronics’ using nanomaterials as opposed to electronics – allows space for more chips inside any device. Everything we want to do with computers – to speed them up – can be done by crinkling graphene like this.” 

Discovered in 2004, graphene is an atom-thick sheet of carbon atoms, which, due to its nano-sized width, is effectively a 2D material. Graphene is best known for its exceptional strength, but also for the material’s conductivity properties, which has already generated much interest in the electronics industry including from Samsung Electronics. 

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The field of straintronics has already shown that deforming the structure of 2D nanomaterials like graphene, but also molybdenum disulfide, can unlock key electronic properties, but the exact impact of different “folds” remains poorly understood, argued the researchers.  

Yet the behavior of those materials offers huge potential for high-performance devices: for example, changing the structure of a strip of 2D material can change its doping properties, which correspond to electron density, and effectively convert the material into a superconductor.  

The researchers carried an in-depth study of the impact of structural changes on properties, such as doping in strips of graphene and of molybdenum disulfide. From kinks and wrinkles to pit-holes, they observed how the materials could be twisted and turned to eventually be used to design smaller electronic components.  

Manoj Tripathi, research fellow in nano-structured materials at the University of Sussex, who led the research, said: “We’ve shown we can create structures from graphene and other 2D materials simply by adding deliberate kinks into the structure. By making this sort of corrugation we can create a smart electronic component, like a transistor, or a logic gate.” 

SEE: Microsoft’s quantum cloud computing plans take another big step forward

The findings are likely to resonate in an industry pressed to conform to Moore’s law, which holds that the number of transistors on a microchip doubles every two years, in response for growing demand for faster computing services. The problem is, engineers are struggling to find ways to fit much more processing power into tiny chips, creating a big problem for the traditional semiconducting industry. 

A tiny graphene-based transistor could significantly help overcome these hurdles. “Using these nanomaterials will make our computer chips smaller and faster. It is absolutely critical that this happens as computer manufacturers are now at the limit of what they can do with traditional semiconducting technology. Ultimately, this will make our computers and phones thousands of times faster in the future,” said Dalton. 

Since it was discovered over 15 years ago, graphene has struggled to find as many applications as was initially hoped for, and the material has often been presented as a victim of its own hype. But then, it took over a century for the first silicon chip to be created after the material was discovered in 1824. Dalton and Tripathi’s research, in that light, seems to be another step towards finding a potentially game-changing use for graphene.

Daphne Leprince-Ringuet

By: Daphne Leprince-Ringuet

Subject Zero Science

Graphene Processors and Quantum Gates Since the 1960s, Moore’s law has accurately predicted the evolution trend of processors as to the amount of transistor doubling every 2 years. But lately we’ve seen something odd happening, processor clocks aren’t getting any faster. This has to do with another law called Dennard Scaling and it seems that the good old days with silicon chips are over. Hello everyone, subject zero here! Thankfully the solution might have been available for quite some time now and Graphene offers something quite unique to this problem, not only for your everyday processor types, but also Quantum computing. In 2009 it was speculated that by now we would have the famous 400GHz processors, but this technology has proven itself to be a bit more complicated than previously thought however most scientists including me, believe that in the next 5 years we will see the first Graphene commercial hardware come to reality. References https://en.wikipedia.org/wiki/Quantum…​ https://www.nature.com/articles/s4153…​ https://www.hpcwire.com/2019/05/08/gr…​ https://en.wikipedia.org/wiki/Graphen…​ https://www.computerhope.com/history/…​ http://www.tfcbooks.com/teslafaq/q&a_…​ https://www.rambus.com/blogs/understa…​ https://www.technologyreview.com/s/51…​ https://arxiv.org/ftp/arxiv/papers/13…​ https://www.sciencedaily.com/releases…​ https://www.nature.com/articles/srep2…​ http://infowebbie.com/scienceupdate/s…​ https://graphene-flagship.eu/field-ef…​ https://github.com/karlrupp/microproc…​ https://aip.scitation.org/doi/full/10…​ https://www.theglobeandmail.com/repor…

Chinese Scientists Claim Breakthrough in Quantum Computing Race

Chinese scientists claim to have built a quantum computer that is able to perform certain computations nearly 100 trillion times faster than the world’s most advanced supercomputer, representing the first milestone in the country’s efforts to develop the technology.

The researchers have built a quantum computer prototype that is able to detect up to 76 photons through Gaussian boson sampling, a standard simulation algorithm, the state-run Xinhua news agency said, citing research published in Science magazine. That’s exponentially faster than existing supercomputers.

The breakthrough represents a quantum computational advantage, also known as quantum supremacy, in which no traditional computer can perform the same task in a reasonable amount of time and is unlikely to be overturned by algorithmic or hardware improvements, according to the research.

While still in its infancy, quantum computing is seen as the key to radically improving the processing speed and power of computers, enabling them to simulate large systems and drive advances in physics, chemistry and other fields. Chinese researchers are competing against major U.S. corporations from Alphabet Inc.’s Google to Amazon.com Inc. and Microsoft Corp. for a lead in the technology, which has become yet another front in the U.S.-China tech race.

Read more: Why Quantum Computers Will Be Super Awesome, Someday: QuickTake

Google said last year it has built a computer that could perform a computation in 200 seconds that would take the fastest supercomputers about 10,000 years, reaching quantum supremacy. The Chinese researchers claim their new prototype is able to process 10 billion times faster than Google’s prototype, according to the Xinhua report.

Xi Jinping’s government is building a $10 billion National Laboratory for Quantum Information Sciences as part of a big push in the field. In the U.S., the Trump administration provided $1 billion in funding to research into artificial intelligence and quantum information earlier this year and has sought to take credit for Google’s 2019 breakthrough.

By Shiyin Chen

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Global Tech News

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Commentary

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DW News

Chinese scientists have announced their development of the most powerful quantum computer in the world. It works 100 trillion times faster than the fastest supercomputers out there and comes little more than a year after Google unveiled Sycamore, their own quantum computer. Chinese scientists have announced their development of the most President Xi Jinping has said research and development in quantum science is an urgent matter of national concern. And the country has invested heavily in this technology, spending billions in recent years. It has become a world leader in the field. Subscribe: https://www.youtube.com/user/deutsche… For more news go to: http://www.dw.com/en/ Follow DW on social media: ►Facebook: https://www.facebook.com/deutschewell… ►Twitter: https://twitter.com/dwnews ►Instagram: https://www.instagram.com/dwnews Für Videos in deutscher Sprache besuchen Sie: https://www.youtube.com/channel/deuts…#QuantumComputer#Cybersecurity#China

The Spring Cleaning Software You Need to Tidy Up Your Computer (And Keep it That Way)

BERLIN, GERMANY – FEBRUARY 04: Symbol photo. A man is typing with his hands on a keyboard of a MacBook Pro on February 04, 2020 in Berlin, Germany. (Photo by Felix Zahn/Photothek via Getty Images)

admit it, you’ve got a ton of junk on your computer. No, not stacked on top of your computer, but on your desktop screen and in the file paths lurking below the surface, in downloaded detritus and folders long covered with pixelated dust — what does “reports-final-finalforrealthistime” even mean?

All that clutter adds up to extra work for you by slowing down your machine’s performance and making it hard to get anything done, whether it be finding a file, clearing space, or just letting you see the picture of your adorable kid you set as your desktop background.

Want to get on top of your files in 2020? Here’s the software you’ll need to get your machine organized, and hopefully keep it that way.

CCleaner

Available on: PC, Mac, Android

Price: Free, $19.95 (one year subscription)

CCleaner is great for dealing with the easily-accumulated clutter clogging your computer. For avid web users, CCleaner wipes data stored in browsers, including temporary files that can take up precious space, history logs that make it easy to identify you, cookies that store information like login credentials, and more.

But that’s not all. Designed to keep every part of your PC or Mac running smoothly, CCleaner can clean up and remove low level system files responsible for crashes or errors, old logs you’ll never need or read, and lets you easily uninstall apps that could be slowing down your computer. Buying the professional version nets you access to more features, like scheduled cleanings, so you don’t have to worry about whether or not you’re overdue for one.

Gemini 2

Available on: Mac

Price: $19.95 (one year subscription), $44.95 (one-time purchase)

If you’re an avid photographer, hoarder of music, collector of memes and their variations, or just love making sure you don’t have multiple copies of files you only need one of, Gemini 2 might well be the app you need to keep duplicates at a minimum. It scans your entire Mac for similar and/or identical files, then presents them to you for perusal or disposal.

Getting rid of duplicate files is a huge help when it comes to reorganizing, but detecting similar files — like the eighteen pictures you took of your sleeping puppy from the same angle — can really free up space, and get you to focus on the photos that really matter to you. Of course, you can always change your mind later, as Gemini 2 only gets rid of them for good once you tell it to.

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Price: $40

If you’re a Windows user with enough duplicates to make your hard drive spin (well, spin faster than usual), check out File Juggler. While there’s no circus tricks involved, File Juggler can organize your files based on preset or custom rules you can enable and disable with a click. It works with all kinds of files, and can categorize them based on nearly every aspect of their existence, including metadata.

Its most powerful feature, though, might be how it handles documents and text. File Juggler can look inside files like PDFs for keywords and dates essential to your organizing style, filing them away accordingly.

Hazel

Available on: Mac

Price: $32

Hazel may be my favorite utilitarian application. Essentially an organizational assistant for your Mac’s files and folders, Hazel makes everything from tagging and renaming to moving, uploading, and deleting as simple — or complex — as you want it. It works by following rules you make using its menu of options, which you can apply to specific folders where your files go, or are supposed to go.

Just assign Hazel a place to monitor (like a few folders, or your cluttered desktop) and watch it work. Its filtering tools are pretty thorough, and lets you pick and choose from various settings associated with your files. Download bank statements often? Hazel can monitor your download folder for PDFs, detect any files matching multiple factors (including name, file size, file type, and more), and drop them where you want them, keeping you organized without you lifting a finger. Put imported photos into one folder, automatically delete or archive documents, automatically tag your images with the proper names and comments.

Onyx

Available on: Mac

Price: Free

Onyx is the utility app for more advanced Mac users. It can double-check your system to see if everything is running smoothly, handles cleanup and maintenance, and can rebuild any corrupted elements should something go awry.

Where Onyx really shines, though, is in its more granular customization options — options which should only be pursued by a more advanced tinkerer, or at least someone prepared to deal with a temporarily disabled computer should they check the wrong box. You can alter how the dock functions, how the Finder appears, customize what wallpaper you see when your Mac boots up, and more. It’s the tool every power user should have at their disposal.

By Patrick Lucas Austin February 14, 2020

Source: The Spring Cleaning Software You Need to Tidy Up Your Computer (And Keep it That Way)

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The Mystery Of Apple’s Missing MacBook

With the release of the Mac Pro this week, and the 16-inch MacBook Pro last month, Apple’s deskbound MacOS machines have been pushing the price point higher and higher, with increased specs for professional users.

What about those at the lower end of the portfolio, looking for an alternative to a Windows 10 laptop, those who want to keep their mobile devices in the same ecosystem, those who have a long relationship with Apple’s MacOS computers but find the rising price is too high for them to upgrade? And how can Apple bring new users to the platform

In short, where is the entry level MacBook, the point where everyone can start their journey? Right now, there isn’t one.

The lowest priced MacBook in the current portfolio is the MacBook Air, with a starting price of $1099 for 8 GB of RAM and 128GB of SSD based storage. I’m pretty sure that a laptop with prices starting at over a grand would not be considered an entry-level laptop by many customers.

Why should Apple be looking at a lower price point for a MacBook? It’s worth taking into account the amount of effort that Apple is putting into cloud-based services and applications. Perhaps the answer to an entry-level MacBook would be to follow Google’s path with the Chromebook options, push everything into a new branch Apple’s walled garden with improved services to match the offering from Google, while keeping the option of local applications and processing power for intensive tasks.

Arguably Apple has already something similar on the books. Take an iPad, add the Smart Keyboard Cover, and you have your equivalent of the Chromebook. The advantage of this solution is that Apple brings the consumers closer into Apple’s garden, with almost every transactions pushed through the App Store and the thirty percent rake, more opportunities to upsell users into Apple’s subscription-based services, and a good chance of locking them into Apple’s hardware eco system for the medium- to long-term.

Whether you consider a tablet and keyboard combo running the closed iPad OS a suitable replacement for a entry-level MacOS powered laptop is the big question.

I suspect Apple believes the answer is yes. Personally I’m in the no camp. While the iPad can hit some of the same functions as a laptop, the MacBook range is about delivering more power, more flexibility, and more customisation than the restricted options present in the iPad.

The MacBook family addresses and solves different problems than the iPad family. Not all of these problems are $1099 problems, but they are problems that countless consumers need addressed. By keeping the entry point to MacOS at such a high level, Apple is ignoring a significant market.

A software and services approach requires the widest possible user base. The wider the base you have, the more you can upsell. Apple needs a diverse product range that meets the needs of as many potential customers as possible. It doesn’t need to fight in the $199 Chromebook market, but Tim Cook and his team should consider the need for a competent laptop in the $799 to $999 range.

Now read how Apple turned the iconic MacBook brand into a supporting player…

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Ewan Spence

I am known for my strong views on mobile technology, online media, and the effect this has on the public conscious and existing businesses. I’ve been following this space for over ten years, working with a number of publishers, publications and media companies, some for long periods of time, others for commissions, one-off pieces or a series of articles or shows. As Scotland’s first podcaster, I continue to be a prominent voice in the rise of podcasting and new media online, and picked up a British Academy (BAFTA) nomination for my annual coverage of the Edinburgh Festival Fringe, alongside contributions to Radio 5 Live, the BBC World Service, presenting Edinburgh local radio’s coverage of the General Election. You’ll find me on Twitter (@Ewan), Facebook, and Google Plus.

Source: The Mystery Of Apple’s Missing MacBook

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5 Best Budget Monitors Of 2019

We buy our own products and put them under the same testing methodology so that you can easily compare them. Unlike most websites, we do not get our products directly from the manufacturers, which means our units aren’t handpicked and actually represent what you would buy yourself. We spend a lot of time comparing the products side-by-side to validate our results and we keep them until they are discontinued so we can continually go back and make sure our reviews are always accurate.

You don’t have to spend a small fortune to get a decent monitor. Whether you’ll be using it for schoolwork, the office, or gaming, there are budget monitors that can fit any need. Cheaper monitors are usually smaller, though, and most of them have 1080p resolutions, which isn’t ideal for everyone.

We’ve reviewed 71 monitors, and below you’ll find our picks for the top 5 budget models that are available for purchase in 2019.

Dell P2417H: The best cheap monitor

Dell P2417H

Dell P2417H – RTINGS.com

RTINGS.com

Type: IPS

Resolution: 1920×1080

The Dell P2417H is the best budget monitor that we’ve tested so far. This 24”, 1080p monitor delivers decent picture quality, and has a great response time and low input lag, perfect for casual gaming. This is also a good monitor for office use, as it has great ergonomics, so it’s easy to place in an ideal viewing position and it looks great when viewed at an angle, thanks to the IPS panel.

This is a pretty bare-bones monitor, with very few additional features. There is a built-in USB hub, with two ports on the back, and two ports on the side, which can be very convenient. It doesn’t have any extra gaming features, like FreeSync, but it has low input lag and a great response time, so it’s still a good choice for casual gamers.

Unfortunately, like most IPS monitors, the Dell P2417H doesn’t look as good in a dark room, and it can’t get very bright, which might be an issue if you’re in a bright room.

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Dell P2217H: The best compact budget monitor

Dell P2217H

Dell P2217H – RTINGS.com

RTINGS.com

Type: IPS

Resolution: 1920×1080

Variable Refresh Rate: No

Size: 22″

If you like the Dell P2417H but want something even smaller and more portable, check out the Dell P2217H. This monitor is a slightly smaller variant of the other Dell, and it offers nearly identical performance.

The small size of this monitor is great for mobile professionals, as it’s relatively compact and easy to carry. There’s no quick release on the stand, though, which isn’t ideal. This monitor has the same inputs as the larger model, including the useful built-in USB hub.

Unfortunately, it has slightly worse black uniformity than the P2417H, which isn’t great for dark room viewing. Otherwise, this is a decent monitor for most uses.

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ViewSonic XG2402: The best cheap gaming monitor

ViewSonic XG2402

ViewSonic XG2402 – RTINGS.com

RTINGS.com

Type: TN

Resolution: 1920×1080

Variable Refresh Rate: FreeSync

Size: 24″

If you want better gaming performance than the Dell P2417H and Dell P2217H offer, the ViewSonic XG2402 is the best cheap gaming monitor that we’ve tested so far. This monitor delivers decent overall picture quality, and it has excellent motion handling and low input lag. This monitor also has a great selection of inputs, and has a built-in USB hub on the back, similar to the two Dells.

This monitor delivers a great gaming experience. It has an excellent 144Hz refresh rate, and it has an impressive response time, so your favorite games have very little blur behind fast-moving objects. This monitor also supports FreeSync variable refresh rate technology, even when connected to a recent NVIDIA graphics card.

Unfortunately, this monitor’s TN panel isn’t great for dark room viewing, and the image degrades when viewed at an angle. Overall, though, this is a great budget gaming monitor that should please most gamers.

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Samsung C27F398: The best budget gaming monitor for a dark room

Samsung C27F398

Samsung C27F398 – RTINGS.com

RTINGS.com

Type: VA

Resolution: 1920×1080

Variable Refresh Rate: FreeSync

Size: 27″

If you want a larger monitor with good dark room performance on a budget, check out the Samsung C27F398. This 27”, 1080p monitor delivers decent overall picture quality, with very good motion handling and great low input lag. The VA panel on this monitor delivers much better dark room viewing than the ViewSonic XG2402, as it produces deep, uniform blacks.

This monitor delivers a good overall gaming experience. It supports AMD’s FreeSync variable refresh rate technology, even when connected via DisplayPort to a recent NVIDIA graphics card. This monitor is limited to a 60Hz refresh rate, though, which might disappoint some gamers.

Unfortunately, like the ViewSonic, the image on this monitor degrades when viewed at an angle, which isn’t ideal for some uses. Overall, though, it’s a good budget gaming monitor.

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Dell U2415: The best budget office monitor

Dell U2415

Dell U2415 – RTINGS.com

RTINGS.com

Type: IPS

Resolution: 1920×1200

Variable Refresh Rate: No

Size: 24″

The Dell U2415 is the best budget office monitor that we’ve tested so far. It delivers decent picture quality, okay motion handling, and low input lag. The 1920×1200 screen is a bit better for multitasking, and the stand has great ergonomics, so it’s easy to place the screen in the ideal viewing position.

Like most IPS monitors, this one has great wide viewing angles. This is great for sharing your screen with someone else, like clients or coworkers. This monitor gets decently bright and has good reflection handling, so there shouldn’t be any issues seeing the screen in a bright room.

Unfortunately, it doesn’t look as good when viewed in a dark room, as it has mediocre contrast and bad black uniformity. Overall, though, it’s a good office monitor for most people.

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This guide may have been updated. To see all measurements and the current recommendations for budget monitors, please go here.

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We purchase our own products and put them under the same test bench so that you can compare the results easily. No cherry-picked units sent by brands. If you buy somethi…

 

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Source: 5 Best Budget Monitors Of 2019

 

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