Haier, Hisense, Hitachi, Insignia, Sharp, and TCL all make Roku-compatible televisions, with many offering either 720p or 1080p resolution. Some 4K Ultra HD TV models are also available. Among those, Hitachi stands out with a full line of 4K/UHD HDR Roku TVs. There are 14 such models, ranging in size from 43 to 65 inches. Hitachi Roku 4K Ultra HD TV Basics Roku features are the same on all compatible TV sets....

Unlimited Tomorrow, a maker of prosthetic arms, is donating hundreds of replacement limbs to the war-torn country. The victims will get access to their prosthetic limbs through 3D scanning, 3D modeling, and 3D printing. This process shortens the timing and reduces the price of a high-tech prosthetic arm from $20,000-$100,000 to under $10,000 per limb. “3D printing enables TrueLimb to be uniquely personalized to each user from the shape, size, and skin tone to match the opposing limb perfectly,” Easton LaChapelle, the CEO and founder of Unlimited Tomorrow, told Lifewire in an email interview....

Though Romero has won countless awards—like a BAFTA Special Award, the 2013 Women in Games Lifetime Achievement Award, and the 2017 Development Legend award—she said one of her biggest accomplishments has been creating her gaming company with husband John Romero. She believes it’s a long-lasting legacy she can leave behind. “It feels nice to try to create the type of environment that you wish you could always work in and to try to have that environment for people,” Romero told Lifewire over the phone....

HTC recently announced a new set of trackers for its Vive virtual reality headsets, including one that tracks facial expressions and mouth movements. It’s part of a growing trend to make VR more responsive and interactive. “Having more-realistic experiences is important to fully transition VR from a novelty or niche tool to a widely used consumer technology,” Ellysse Dick, a policy analyst at the Information Technology and Innovation Foundation, a think tank for science and technology policy, said in an email interview....

While silicon is the most widely used semiconductor material in electronics, a range of semiconductors is used, including germanium, gallium arsenide, silicon carbide, and organic semiconductors. Each material has advantages such as cost-to-performance ratio, high-speed operation, high-temperature tolerance, or the desired response to a signal. Semiconductors Semiconductors are useful because engineers control the electrical properties and behavior during the manufacturing process. Semiconductor properties are controlled by adding small amounts of impurities in the semiconductor through a process called doping....

The Platform Accountability and Transparency Act (PATA) bill isn’t the first legislation that aims to introduce transparency into the secret sauce that powers popular social media platforms. However, while the earlier attempts such as 2020’s Platform Accountability and Consumer Transparency (PACT) Act failed to pass muster, PATA comes when there’s growing angst against social media, following the Facebook Papers leaks and the Senate testimony of Instagram CEO Adam Mosseri. “If the Facebook Papers have taught us anything, it is that there are real harms that are being done to sensitive groups of users, such as teens....

How to Find AirDrop Settings in Control Center AirDrop is easily one of the best-kept secrets on the iPhone and iPad. You can use it to transfer photos and other documents wirelessly between two Apple devices — iPhones, iPads, iPod touch devices, and Macs. So why haven’t more people heard about it? AirDrop originated on the Mac, and it’s slightly more familiar to those with a Mac background. Apple hasn’t pushed it in the same way the company publicized other features over the years, and it certainly doesn’t help that the switch is hidden in the iOS Control Center....

Excel Formula Syntax Some important points to remember about Excel formulas: Formulas in Excel begin with an equal sign. The equal sign is typed into the cell where the answer will appear. The addition sign in Excel is the plus symbol. Formulas are completed by pressing the Enter key. Use Cell References in Addition Formulas In the example data shown below, rows 2 through 4 use a formula that is located in column C to add the data in columns A and B....

Why You Need a House in Minecraft If you’re playing in survival mode, Minecraft is a dangerous place. Zombies, skeletons, and exploding Creepers come out as soon as it gets dark, so your very first task in the game is to create a place where you can survive the night. Once you’ve built your initial house, you’ll also want to place a bed to set your spawn point, add chests to store things, and install valuable tools like a Crafting Table, Brewing Stand, Anvil, and Enchanting Table....

You configure your Mac’s DNS settings using the Network system preferences pane, where you can use the same instructions for any network connection type. What You Need One or more DNS IP (Internet Protocol) addresses. IP addresses are usually assigned by your Internet Service Provider (ISP), although you are usually under no constraints to use the assigned name servers. Some individuals prefer to use publicly available DNS services, such as Open DNS or Google DNS, on the theory that publicly available DNS servers may be faster than those supplied by a local ISP....

What Is a Photo Scanner? Professional photographers, artists, commercial printers, and ad agencies regularly use scanners to digitize physical photographs and documents to produce professional-quality images. You may want a scanner to scan old family film photographs, negatives, and transparencies. You can even use photo scanners to scan documents and go paper-free with your receipts. Just like smartphones cut into the market share of traditional film and digital cameras, digital photography cut into the scanner market....

How Do I Choose a Keyboard Switch? Whether you’re building a custom keyboard or buying one off the shelf, the switches are always an essential keyboard feature to consider. When you push a key on your keyboard, the switch underneath is what transmits a signal to let your computer know you’ve pressed a key. In mechanical keyboards, these switches come in a variety of styles which all feel and work differently....

Screen Size Laptop screens have a range of sizes. Larger screens provide an easier-to-view workspace and work well as desktop replacements. Ultraportables tend to have smaller screens, allowing for reduced size and increased portability. Almost all laptops offer a wide aspect ratio screen either for a more cinematic display or to reduce the size of the screen in the depth dimension for an overall smaller size. All screen sizes are given in a diagonal measurement: the distance from the lower screen corner to the opposite upper corner....

Cleaning: How to Clean Your Phone Before you take any cleaning measures, disconnect your phone from its charger, or remove it from a wireless charging pad, and turn off the device. This will show you how dirty the screen is, along with preventing you from accidentally calling someone or opening an app. Use a Microfiber Cloth Your first line of defense is a microfiber cloth. You likely have a few of these lying around, as these cloths usually come with purchases of screen protectors, sunglasses, or regular glasses....

Device Configuration The configuration parameters on your device must match the type of network gateway and internet service you use. Typically, these settings include: Username and password. Network name (SSID). For Wi-Fi home networks and hotspots. Wireless security key (or passphrase). For Wi-Fi networks. Domain Name System (DNS), MTU, and other service-specific settings. As required by the internet service provider (ISP). Before you can connect for the first time, you need a subscription to the service, which requires the ISP to activate and set up....

Why Would I Need an External Microphone? Beyond the basic functions, your computer’s included internal microphone, if it has one, may not be what you need. Most desktop computers don’t have mics. You might want an external microphone if you frequently do any of the following: Record audio for podcasts or YouTube videos. Utilize streaming services, like Twitch or Mixer. Use internet calling, especially in a professional setting. Use voice chat for various activities, such as online gaming....

There are actually a few different ways to uninstall iPod Touch apps. When you delete apps, you free up space on your device and make room on your home screen for more apps. Before you delete the app, consider organizing your apps into folders if you just need to declutter your screen. How to Delete Apps From the Home Screen The easiest way to delete apps on the iPod is to do it directly on the device....

Open a Blank Document You need to open a blank document to start working.Go to File > New to open the Create a New Image dialog. You’ll need to select a document size suitable for however you intend to use your love heart. We also set our page to portrait mode as love hearts generally tend to be taller than they are wide. Add a Vertical Guide A vertical guide makes this tutorial very quick and easy....

The Photos app that comes pre-loaded on the iPhone offers the tools to edit video. These features are pretty basic — they just let you trim your video to your favorite sections — but they’re good for creating a clip to share with your friends via email or text message, or with the world on YouTube. The Photos app isn’t a professional-level video-editing tool. You can’t add sophisticated features like onscreen text, or visual or sound effects....

How Sound Check Works in iTunes Every digital music file includes ID3 tags that contain metadata attached to each song and provide additional information about it. These tags contain things such as the name of the song and artist, album art, star ratings, and certain audio data. The most important ID3 tag for the Sound Check feature is called normalization information. It controls the volume at which the song plays. This is a variable setting that allows the song to play quieter or louder than its default volume....