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This post delves into the inner workings of GPS, breaking down how it calculates user positions. It explains the importance of coordinate systems, such as ECEF and WGS 1984, in expressing positions accurately. The content then delves into the triangulation process used by GPS to determine user positions based on satellite distances. It discusses the […]
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Fusion OS is a hobby operating system built for x86-64 using Nim. The process of creating Fusion is being documented on the website https://0xc0ffee.netlify.app. Features currently implemented include a UEFI Bootloader, Physical and Virtual Memory Managers, User Mode, Preemptive Multitasking, System Calls, and more. Planned features include Demand Paging, Inter-Process Communication, Disk I/O, and a […]
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Summary: Visual programming environments tend to fail because they aim to replace code syntax and logic that developers do not tend to visualize. Instead, developers focus on visualizing aspects like state transitions, memory layouts, or network requests. The author suggests that visual programming tools should start by addressing software aspects that developers already visualize. The […]
A team of researchers at UC San Diego has developed a firmware update that can completely hide a smartphone’s unique Bluetooth fingerprint, eliminating the vulnerability discovered in 2022. This method uses complex math, but the implementation is simple. By randomizing different layers, like contact lenses, the researchers make it difficult to track a device through […]
AT&T, once a dominant force in American business, has seen a decline in its status in recent years. Despite being a major player in the 20th century, providing essential telephone services and infrastructure, AT&T now ranks much lower compared to tech giants like Amazon and Apple. The company played a crucial role in transforming American […]
We aim to create the simplest git collaboration tool to self-host a git server easily. We combine mailing list and pull request workflows to simplify collaboration while avoiding the complexities of traditional setups. Sending code changes via email is decentralized but cumbersome, while popular pull request systems like GitHub restrict users to web browsing for […]
Notion has seen a tremendous growth in data over the past three years, with activity from users and content creation driving a doubling every 6-12 months. To meet the demands of critical use cases, especially AI features, Notion built and scaled a data lake for efficient data management. All data in Notion, from texts to […]
The content discusses the process of setting up an x86_64 CPU, transitioning from real mode to long mode. Detailed steps are provided on creating a boot sector, loading stage 2 from disk, and switching to protected mode. Unique information includes coding examples, linker scripts, GDT setup for protected and long modes, and building a page […]
Summary: The author discusses the various ways to template data into HTML without additional dependencies, focusing on using JavaScript template literals and functions instead of traditional templating languages. Components are defined as functions that return strings, with the option to include children. The approach is flexible, composable, and does not require external frameworks. The author […]