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How does a QR code work?

January 15, 2026 · Dustin Collins · 3 min read

QR codes look like simple black-and-white squares, yet they carry structured data that a camera can decode in a fraction of a second. When you point your phone at a QR code, the camera captures an image and software interprets the pattern into text, a URL, Wi‑Fi credentials, payment details, or other data. The process can feel “visual,” but it is mostly computational pattern recognition rather than human-like visual cognition.

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January 14, 2026
Is a Database a Type of Software?
Annie Hayes · 3 min read
People often say “the database is down” or “install the database,” which can make the term sound like a single thing. In practice, “database” can mean different parts of a data system. Whether a database is software depends on which meaning you are using.
January 13, 2026
What do GET and POST do in an API?
Aria Singh · 3 min read
APIs let software exchange data and trigger operations in a predictable way. When people talk about “using an API,” they often mean sending HTTP requests such as GET or POST to a server and receiving responses back. Below are common actions you’ll see when working with APIs, what they mean, and how they’re typically used.
January 13, 2026
Siri’s New Brain: Apple Brings Google Gemini Into the Core
Emily Henderson · 3 min read
Apple has confirmed a multi‑year agreement with Google to use Gemini AI models as a foundation for a revamped Siri and broader Apple Intelligence features expected later in 2026. The partnership positions Gemini as a deep, system-level capability rather than a simple add‑on chatbot integration.
January 12, 2026
What Is MCP and How It Works
Lillian Kim · 3 min read
The Model Context Protocol (MCP) is a standard way for large language models (LLMs) to interact with external tools and real systems. An MCP server is the component that actually exposes those tools and executes real-world actions. Rather than speaking in abstract terms, this article shows exactly what is exchanged between an LLM application and an MCP server, and how the loop between them works in practice.
January 12, 2026
Is AI a Multi-Dimensional Creature?
Lillian Kim · 3 min read
Artificial intelligence often gets described with language borrowed from biology and myth: it “learns,” it “speaks,” it “creates.” That invites a bigger question: should AI be treated as a new kind of multi-dimensional creature, or is that just a poetic shortcut for complex software?
January 11, 2026
How does fiber optic cable work?
Jessy Chan · 3 min read
Fiber optic cable carries data as light rather than electrical signals. That simple change is why fiber can move enormous amounts of information over long distances with low loss and high reliability. Instead of pushing electrons through metal, fiber guides pulses of light through a thin strand of glass or plastic, keeping the signal clean and stable even across many kilometers.
January 10, 2026
Which free APIs provide real-time weather data?
Nina Kimes · 3 min read
Real-time weather data is useful for dashboards, travel tools, farming alerts, event planning, and IoT projects. Several providers offer free tiers that can deliver current conditions, forecasts, and sometimes alerts—often with rate limits or attribution requirements.
January 9, 2026
What Is LangChain?
Katherine Holland · 3 min read
LangChain is an open-source framework built to support applications that use large language models in structured, reliable ways. It focuses on turning raw model outputs into systems that can search data, use tools, and follow multi-step logic. Language models are powerful on their own, but real products rarely rely on a single prompt and a single answer. Most useful systems need memory, access to files or databases, and the ability to perform actions such as calculations or API calls. LangChain was created to organize those needs into a clear development framework.
January 9, 2026
How do I find specific data in a database?
Dustin Collins · 3 min read
Finding the right rows in a database is mostly about asking clear questions and translating them into precise queries. This article explains practical ways to search for specific data, from simple filters to joins and indexing, so your results are accurate and your queries stay quick.
January 8, 2026
The Agentic Era Begins: NVIDIA’s Vera Rubin and the Future of AI Supercomputing
Jessy Chan · 3 min read
In the high-stakes race for artificial intelligence dominance, the finish line keeps moving. Just as the world began to acclimate to the power of NVIDIA’s Blackwell chips, the tech giant has once again reset the standard. At CES 2026, NVIDIA unveiled its latest marvel: the Vera Rubin platform. Named after the pioneering astronomer who provided the first evidence of dark matter, this new system is not merely a faster chip—it is a re-imagining of the AI Supercomputer designed to power a new generation of autonomous, reasoning AI.
January 7, 2026
What Is LangChain? A Practical Introduction
Elise Taylor · 3 min read
LangChain is an open-source framework for building applications powered by large language models (LLMs). It helps developers go beyond simple prompts and turn language models into systems that can use data, tools, memory, and multi-step workflows. Instead of treating an LLM as a standalone chatbot, LangChain provides the structure needed to integrate it with real-world software components like databases, files, and APIs.
January 6, 2026
What tools help with New Year planning?
Aria Singh · 3 min read
A new year feels like a clean page, but good intentions need practical systems. The right tools can turn vague goals into weekly actions, keep your time realistic, and help you review progress without guilt.
January 6, 2026
How Do You Engineer High-Quality PDF Embedding Chunks?
Aria Singh · 3 min read
Turning a PDF into high-quality embedding chunks is less about “cutting it small” and more about producing chunks that are coherent, searchable, and stable over time. A good pipeline keeps meaning intact, preserves useful structure, and produces consistent text that won’t shift every time you reprocess the same file.
January 5, 2026
What Do LLM Weights Do?
Lillian Kim · 3 min read
Large language models (LLMs) are often described as “just weights.” That phrase sounds dismissive, but it’s accurate in a technical sense: the model’s learned behavior is stored in a huge collection of numbers. When you ask an LLM a question, those numbers guide how it turns your text into a response.
January 4, 2026
What Does 3nm or 5nm Mean in Chips?
Elise Taylor · 3 min read
When you hear about a new smartphone with a 3nm chip or a laptop powered by 5nm technology, these numbers refer to the manufacturing process used to create the processor. The nanometer measurement describes the size of transistors packed onto the silicon wafer, with smaller numbers indicating more advanced technology.
January 2, 2026
Can AI Create and Edit a PPT File?
Katherine Holland · 3 min read
AI can create and edit PowerPoint (PPT) files by turning plain text, notes, or documents into structured slide decks, then refining design, layout, and wording with consistent formatting. It works through a mix of language processing (to plan the story) and design automation (to shape visuals). Below is a practical look at what AI can do, how the workflow typically runs, and what to watch for when you want a usable presentation rather than a rough draft.
January 1, 2026
Why Learn to Work with AI This Year?
Lillian Kim · 3 min read
A new year is a practical moment to upgrade how you work. AI tools are no longer “nice to have” for a few technical teams—they’re becoming standard work companions for writing, analysis, planning, and operations. Learning how to work with AI now is less about chasing trends and more about gaining a reliable edge in output quality, speed, and clarity.
December 31, 2025
Streamline Your Development Process with Browser Sync
Lillian Kim · 3 min read
In today's web development environment, efficiency is key. As developers, we are always on the lookout for tools that simplify our workflow and enhance our productivity. One such tool is Browser Sync, a powerful tool that can drastically improve how we develop websites by synchronizing browser applications across multiple devices.
December 31, 2025
The Power of Node.js
Billy Ewing · 3 min read
Node.js has taken the world of web development by storm, becoming a favorite among developers for building scalable and efficient applications. This JavaScript runtime allows developers to use JavaScript on the server side, making it easier to create fast and reliable network applications.
December 31, 2025
Using Arduino with Node-RED for IoT Projects
Nina Kimes · 3 min read
The combination of Arduino and Node-RED can open exciting possibilities in the world of Internet of Things (IoT) projects. Arduino provides an easy-to-use platform for physical computing, while Node-RED offers a web-based flow editor for wiring together hardware, APIs, and online services. Together, they make it simpler to create interactive projects that involve sensors, actuators, and other hardware components.
December 31, 2025
Managing Packages with Azure NPM
Emily Henderson · 3 min read
Using Node Package Manager (NPM) is a fundamental part of developing applications in JavaScript, and when combined with Azure’s capabilities, it brings forth a new level of functionality for developers. Azure NPM enables developers to seamlessly manage packages, integrate various services, and streamline their workflows in a cloud environment.
December 31, 2025
What Is Recurrent Neural Networks in AI Training
Emily Henderson · 3 min read
Recurrent Neural Networks (RNNs) are a type of artificial intelligence that's really good at dealing with sequences, like sentences in a conversation or steps in a recipe. They're different from other types of AI because they can remember things from the past, which helps them understand sequences better. This article aims to break down the structure and function of RNNs in simple terms.
December 31, 2025
How does RAG find the right context?
Katherine Holland · 3 min read
Retrieval-Augmented Generation (RAG) helps a language model answer with facts drawn from your own documents. Instead of relying only on what the model “knows,” it retrieves relevant text passages and then writes a response grounded in them. The key question is how it selects the right passages from a large collection during a conversation.