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Electronics News
Medium
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What is a computer? ← Electronics P1
- A computer is a machine that allows us to do very simple things very, very fast using semiconductivity and transistors.
- Transistors, acting like electronic switches, can be arranged in a certain way to form logic gates
- Logic gates perform basic logic operations like AND, OR, NOT, XOR, etc.
- By combining transistors we can get logic gates, and by combining logic gates we can perform more complex tasks such as math.
- Binary numeral system is the foundation of computer devices; base-2 system is easy to build machines with transistors and logic gates.
- Flip-flops, or latches, hold their output values until the input signals are changed, this forms the foundation of what we call memory.
- The technology of flip-flop-based memory is used only for most critical tasks like the cache or registers in the CPU of your computer or phone.
- The complexity of accessing data stored in RAMs has O(1) or 'constant time' complexity which is very fast.
- RAMs stand for Random access memories, because the access to its data is not linear or sequential but random.
- With this basic understanding of the basic technologies that allow computers to exist, we can better understand what defines a computer.
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Knowridge
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331
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Scientists develop star-based navigation system to replace GPS for drones
- Researchers from the University of South Australia (UniSA) have developed a star-based navigation system for drones.
- This system provides a reliable and cost-effective alternative to GPS, especially in areas where GPS is unavailable or compromised.
- The system combines celestial navigation with vision-based technology, making it lightweight and suitable for smaller drones.
- The star-based navigation system offers jamming resistance, low cost, and non-emissive navigation, improving the capabilities of drones in various industries.
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Mit
3w
122
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Photonic processor could enable ultrafast AI computations with extreme energy efficiency
- Scientists from MIT have demonstrated a fully integrated photonic processor that can perform all the key computations of a deep neural network optically on the chip, making it an ideal candidate for computationally demanding applications like high-speed telecommunications, scientific research, and lidar.
- Deep learning models require a lot of energy as they involve many layers of computation that can push the limits of traditional electronic computing hardware.
- Photonic processors, however, can perform these computations with light, offering faster and more energy-efficient alternatives.
- The newly developed optical device can complete the key computations for a machine-learning task in less than half a nanosecond, while achieving more than 92% accuracy.
- The chip is composed of interconnected modules that form an optical neural network and is fabricated using commercial foundry processes, which could enable scalable integration into electronics.
- The photonic processor may lead to faster and more energy-efficient deep learning for computationally demanding applications, such as scientific research and high-speed telecommunications.
- Designing devices that combine nonlinear functions through electronics and optics called nonlinear optical function units (NOFUs) has enabled the chip to perform nonlinear operations on the chip.
- The entire circuit was fabricated using the same infrastructure and foundry processes that produce CMOS computer chips, which can make the chip manufacturable at scale using tried-and-true techniques with minimal errors.
- The researchers want to explore algorithms that can leverage the advantages of optics to train systems faster and with better energy efficiency, as well as scaling up their device and integrating it with real-world electronics like cameras or telecommunications systems.
- This research was funded, in part, by the U.S. National Science Foundation, the U.S. Air Force Office of Scientific Research, and NTT Research.
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Knowridge
3w
302
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Scientists create color-changing materials for smart technologies
- Scientists at Nanyang Technological University (NTU) have developed color-changing materials called 2D halide perovskites.
- By using an environmentally friendly method, the researchers were able to adjust the band gap of these materials, allowing for precise control over their color.
- One of the perovskites was found to change color from orange to red when heated, and return to orange when cooled, showcasing its thermochromic switching behavior.
- This discovery could have applications in smart technologies, such as coatings, inks, and optoelectronic devices like sensors, displays, and solar energy systems.
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Knowridge
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263
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How your doorknob could power your home
- Dr. Jeeeun Kim from Texas A&M University is leading a project to turn passive interfaces like doorknobs and light switches into adaptive tools that can capture and repurpose energy.
- By adding sensing and energy-harvesting technologies, everyday actions such as sliding a window or opening a fridge door could generate energy to power devices like alarm systems or digital displays.
- The project utilizes 3D-printed add-ons to retrofit common objects like fridge doors and doorknobs, converting the energy generated from these actions into usable power.
- Dr. Kim's research aims to make homes smarter, more energy-efficient, and user-friendly by increasing awareness of energy usage and accessibility challenges through a smartphone scanning software system.
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Medium
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171
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How to Get the Best Gaming PC in 2024: Build, Buy, and Optimize Your Setup
- Building your gaming PC is a great way to get full control over your parts
- Prebuilt gaming PCs are perfect for those who wish to get started immediately with a system
- Gaming PCs are designed to handle the most demanding aspects of today’s gaming
- Building a gaming PC isn’t a weekend project for everyone
- A powerful CPU is crucial for gaming as it takes care of game physics, AI, and general processing tasks
- 16GB of DDR5 RAM is the sweet spot for most gamers, providing fast speeds and smooth performance
- Storage will affect how fast the load times are and how quickly games start up
- The iBUYPOWER Slate 8 MESH Gaming PC provides the best value for gamers
- Maintenance of your gaming PC is crucial
- Use compressed air to clean out the fans, GPU, and CPU cooler
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Knowridge
3w
287
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Scientists create “leaftronics”: A green revolution in electronics
- A research team at TUD Dresden University of Technology has developed 'Leaftronics', a groundbreaking technology inspired by the natural design of leaves.
- Leaftronics introduces biodegradable materials for electronic devices, offering a sustainable solution to tackle electronic waste.
- The innovation uses the natural framework of leaves to reinforce biodegradable polymer films, making them strong and practical for advanced electronics.
- Once the device reaches the end of its life, the substrate can be broken down in soil or processed in biogas plants, reducing overall waste and enabling recycling of electronic components.
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Knowridge
3w
30
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Air fryers: The cleanest way to cook at home
- Air fryers are confirmed to be the least polluting cooking method for your home, producing lower levels of indoor air pollution compared to pan-frying, stir-frying, and deep frying.
- Indoor air pollution from cooking can lead to various health issues, including respiratory problems and heart disease.
- A study tested five cooking methods and found that air frying and boiling produced significantly less pollution in terms of particulate matter and volatile organic compounds (VOCs).
- Proper ventilation, such as opening windows or using extractor fans, is essential to reduce indoor pollution during and after cooking.
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Knowridge
4w
8
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New smart sensor could help you test food safety at home
- Researchers at The University of Texas at Dallas (UTD) are developing smart sensors that can quickly detect harmful contaminants in food and water.
- The sensors have the ability to identify bacteria such as E. coli and Salmonella, as well as toxic chemicals, in just minutes.
- The goal is to create accurate, fast, and user-friendly sensors that individuals can use to protect themselves.
- The researchers are collaborating with EnLiSense, a Texas-based company, to make these sensors available to consumers.
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Knowridge
4w
310
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Microwave could turn electronic waste into valuable resources, study finds
- Scientists have developed a cleaner, more efficient method to recycle e-waste using microwave technology.
- The method, called microwave-induced pyrolysis, can break down the plastic insulation on electric cables without damaging the copper wire inside.
- Microwaves heat the copper wires, causing the PVC insulation to carbonize and expose the copper, ready for reuse.
- This innovative method not only recovers valuable copper but also recycles byproducts like chlorine and carbon.
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Medium
4w
213
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Electric Candle Lighter Plasma Arc Lighters Windproof & Flameless with USB Rechargeable Battery…
- The Electric Candle Lighter Plasma Arc Lighter is a modern and practical solution for lighting candles, grills, fireplaces, and more.
- It is flameless, windproof, and rechargeable, providing a reliable and safe option for everyday use.
- The LED battery display keeps you informed about the charge level, ensuring you never run out unexpectedly.
- With its high-quality materials and sleek rose gold design, it also makes for a great gift.
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Medium
4w
195
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Why Your Next Pair of Wireless Earphones Should Feature HiFi Sound and Active Noise Cancellation
- Wireless earphones with HiFi sound and active noise cancellation (ANC) are must-have for any music lover or anyone seriously into audio experiences. Poor sound quality and noisy environments can lessen the audio experience; hence, HiFi sound can preserve the original recording as accurately as possible in wireless earphones. HiFi sound quality is a combination of better drivers, high quality internal components, advanced audio processing, and higher-quality codecs.
- Codecs such as aptX HD and LDAC are responsible for high fidelity audio transmission over Bluetooth, needing less audio compression and more accurate sound reproduction. The use of high-quality drivers, such as titanium or beryllium results in deep bass, clear mids, and sparkling highs that make the audio experience vibrant.
- ANC technology reduces unwanted ambient noise, and creates a quieter listening experience. It blocks out external noise and makes one focus more on the audio content, whether it’s music, podcast, or movie; resulting in an immersive experience that standard earphones cannot match. ANC earphones can be helpful in preserving the hearing in the long run.
- The synergy of combined features like Hi-Fi sound and ANC result in an exception audio experience. The right Bluetooth codec is crucial for Hi-Fi sound quality. ANC quality is also important to block the external noise. Comfort and fit of earphones are equally necessary. Battery life should also be considered while buying wireless earphones.
- Future advancements in Hi-Fi sound and ANC include improved sound resolution, smarter noise cancellation, and more power-efficient designs. Wireless earphones with Hi-Fi sound and active noise cancellation provide everything you need to take your music, podcasts, and calls to the next level.
- In conclusion, for anyone wanting an excellent audio experience, wireless earphones with HiFi sound and active noise cancellation are worth the investment. The combo of the two provides clarity and immersion to audio content, making it essential for music lovers on the go and audiophiles.
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Medium
4w
227
The Ultimate Guide to Gaming Setup Accessories Every Gamer Needs
- Investing in ergonomics ensures you stay comfortable, healthy, and focused during your gaming marathons.
- Sound is a critical part of gaming. The right audio setup can make or break your experience.
- Your monitor is your window into the game world. A high-quality display can dramatically enhance your visuals and improve your reaction time.
- Every keystroke and mouse movement matters in gaming. The right peripherals can make all the difference.
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Livescience
4w
281
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Scientists want to build a device that could capture the body heat we radiate, and use it to power other technologies
- Researchers aim to produce energy, using the body heat we radiate, with eco-friendly materials.
- The captured heat energy can be stored and used as power, through a wearable tech device acting as a power bank.
- The aim of machinery manufacturers is to improve operational efficiency and to contribute to a more sustainable environment by harnessing wasted energy with waste heat recovery systems.
- It is discovered that thermoelectric materials can be created from wood, opted as a safe, sustainable alternative to traditional, environmentally harmful ones.
- Ireland's University of Limerick, in collaboration with the University of Valencia, has made a sustainable method to convert waste heat into electricity using Irish wood products, mainly lignin.
- The new technology of converting waste heat to electricity has the potential to significantly benefit sustainable energy solutions for various industries, from manufacturing to infrastructure.
- Supercapacitors are essential for storing energy from waste heat. However, their reliance sustainability concerns pose a challenge.
- Lignin-based porous carbon has been identified as an alternative electrode for supercapacitors, facilitating the rapid movement and storage of ions without reliance on fossil fuels.
- The eco-friendly nature of lignin-based porous carbon makes it a promising solution for sustainable energy storage to power everything from consumer electronics to electric vehicles.
- The research offers an innovative solution to harness wasted heat and improve energy efficiency, and ultimately to contribute to a more sustainable environment.
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Knowridge
4w
428
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Scientists discover how avatar gender shapes gaming behavior
- The gender of an avatar in video games can influence player behavior, according to research from Nottingham Trent University.
- Players who choose avatars of the same gender as themselves complete more quests and discover more locations.
- Female avatars in action role-playing games have higher kill rates than male avatars, challenging traditional gender stereotypes.
- Avatars can shape the gaming experience, with players who strongly identify with their avatars enjoying the game more.
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