# Tech Timelines > Tech Timelines traces the milestones of technology: the inventions, the breakthroughs and the people who built the tools we live with. ## About Tech Timelines (techtimelines.pro) traces the milestones of technology: the inventions, the breakthroughs and the people behind the tools we live with, from the printing press to the microchip and the network. Part of The Timeline Network. Machine-readable site briefing (llms.txt · llmstxt.org) for https://techtimelines.pro, published for AI and LLM readers. ## Pages - [Tech Timelines | The tools that remade the world](https://techtimelines.pro/): Tech Timelines traces the milestones of technology: the inventions, the breakthroughs and the people who built the tools we live with. - [About | Tech Timelines](https://techtimelines.pro/about): About Tech Timelines: the milestones of technology and the people behind them. - [ARPANET's First Message: 'LO' and the Birth of the Internet, 1969](https://techtimelines.pro/arpanet-first-message-lo-1969): The seminal moment in digital communication history began not with a perfect transmission, but with an incomplete one: the two letters 'LO' sent over the ARPANET. This fragmented message, delivered in 1969, marked the first successful host-to-host communication over a wide-area packet-switched network. - [Articles | Tech Timelines](https://techtimelines.pro/articles): Articles from Tech Timelines: the stories behind the inventions and breakthroughs that shaped technology. - [Gutenberg's Press: Printing, Knowledge, and a Revolution](https://techtimelines.pro/gutenberg-movable-type-printing-press-1450): Before 1450, books were luxuries, painstakingly copied by hand. Johannes Gutenberg's invention of movable type transformed how knowledge was created, disseminated, and preserved, sparking an intellectual and social revolution across Europe. - [The Eras | Tech Timelines](https://techtimelines.pro/eras): The eras of technology, from the printing press to the smartphone: the full Tech Timelines timeline. - [The Intel 4004: A Single Chip Reshapes Computation](https://techtimelines.pro/intel-4004-first-microprocessor-1971): In 1971, Intel released the 4004, the first commercially available microprocessor. This tiny silicon device integrated the core functions of a computer onto a single chip, fundamentally altering the trajectory of electronics. - [The Transistor, December 1947: The Bell Labs Device Behind Modern Electronics](https://techtimelines.pro/the-transistor-december-1947-bell-labs): In December 1947, a team at Bell Labs unveiled a device that could amplify and switch electronic signals without vacuum tubes. This invention laid the groundwork for every electronic device we use today, ushering in the digital age. - [The Transistor: Bell Labs and the Dawn of Solid-State Electronics](https://techtimelines.pro/the-transistor-bell-labs-december-1947): In December 1947, a small device built at Bell Telephone Laboratories fundamentally changed the course of electronics. This invention, the transistor, replaced bulky vacuum tubes with a solid-state switch, laying the groundwork for every digital device that followed. - [Tim Berners-Lee's 1989 Proposal: The Memo That Became the World Wide Web](https://techtimelines.pro/tim-berners-lee-1989-world-wide-web-proposal): In 1989, facing a chaotic sea of information at CERN, Tim Berners-Lee penned a memo proposing a new way to link and share data. This seemingly modest document would lay the conceptual groundwork for the World Wide Web, transforming global communication forever. - [Version History | Tech Timelines podcast](https://techtimelines.pro/podcast): Version History, the Tech Timelines podcast: one invention and the people behind it, every week. --- ## How this was generated This document is auto-generated by **Luminal CMS — The Vault** from the site's own content and any connected sources, published for AI/LLM readers. - **Sources:** 11 pages · curated About - **Generated:** 2026-11-10 UTC · refreshed weekly - **Format:** llmstxt.org (`llms.txt` = index · `llms-full.txt` = full briefing)