core rope memory

CuriousMarc's Apollo Guidance Computer restoration series looks at core rope memory, the ROM that held the Moon landing programs. Mike Stewart builds a custom reader to recover lost AGC programs.

The first episode of CuriousMarc's series restoring a real Apollo Guidance Computer, led by AGC expert Mike Stewart. They set up a makeshift lab in a Houston hotel room to open up a rare machine owned by a private collector.

A 36-minute animated deep dive from Branch Education into how DRAM works. It shows how memory connects to the CPU and how billions of bits are stored in nanoscale capacitor cells. It also covers why DRAM sits between SSDs and the processor.

Simon Knowles, co-founder and CTO of Graphcore, talks about "intelligence processors", chips designed specifically for machine learning. The talk was given at the RAAIS 2017 summit and covers Graphcore's architecture.

John McCall of Apple's Swift team presents at CppNow 2023 on introducing a memory-safe successor language into large C++ code bases. He argues incremental improvement of C++ hits hard limits and explains Swift's C++ interoperability for gradual migration.

Brian Troutwine's Code Mesh 2015 talk on the Apollo Guidance Computer. It covers the AGC's design, core rope memory, its interrupt and software behavior, and the pioneering engineering effort behind it.

Yanis Varoufakis argues that Europe's electricity price spikes stem from how the energy market was designed and privatised, plus corporate profiteering. He proposes ways out.

Emery Berger's CppCon 2019 talk introducing Mesh, a drop-in malloc replacement that compacts memory in unmodified C and C++ programs. It tackles fragmentation by merging pages without changing pointers.

A documentary on Clive Wearing, a renowned musician whose brain was damaged by a virus in 1985, leaving him with a memory spanning only about seven seconds. It follows his life and condition.

Chandler Carruth's CppNow 2023 talk describes Carbon as a successor language to C++ rather than a superset, focusing on C++ interop and a path to memory safety in large existing codebases. It explains why Carbon takes a different approach from Cpp2 and Circle.

A short Campus Reform clip in which a teacher claims to have helped write Common Core with the aim of ending white privilege. It is a brief, politically charged advocacy-media piece.

An animated map showing the borders and populations of European countries for every year since 400 BC. Vassal states and colonies are excluded from population counts.

A four-minute clip of Milton Friedman, from a 1978 address, discussing property taxes and land value taxation. He says property tax is the least bad tax and explains why it is so unpopular.

A Zig SHOWTIME talk by Benjamin Feng on what a memory allocator is, followed by an interview. It covers allocation strategies and different allocator types in Zig.

George Friedman of Stratfor speaks at the Chicago Council on Global Affairs about flashpoints in Europe that he expects to erupt again, including borderlands and cultural fault lines.

A short CGP Grey explainer on the overlapping and inconsistent membership arrangements of European countries across the EU, Schengen, the euro and the EEA. It shows why "the EU" is full of exceptions.

Grandmaster David Howell tests Magnus Carlsen by showing him chess positions and asking which famous games they come from. Carlsen recognizes many almost instantly.

In an Ars Technica War Stories episode, Prince of Persia creator Jordan Mechner describes how he made the game on the Apple II, fighting hardware memory limits and the platform's decline. It covers the rotoscoped animation and the engineering tricks involved.

Tantacrul gives a detailed UX and UI design review of the MuseScore 3 notation software and compares it with Sibelius. It examines visual appeal, navigation and notation quality.

A short Yes Minister clip in which the civil servant explains why Britain joined the European Union, delivered as satire of British foreign policy.

A 1966 NASA safety film teaching workers how to handle toxic rocket propellants such as hydrazine and nitrogen tetroxide. It explains the hazards of these corrosive, flammable and toxic chemicals and what to do after contamination.

A one-minute clip of Slavoj Zizek showing what he calls the official geographical limit between the Balkans and Central Europe, standing at a river in Ljubljana. It is a short, absurd and funny piece of cultural geography.

Kate Gregory's CppCon 2017 talk picks ten highlights from the C++ Core Guidelines and shows examples and benefits for each. It is aimed at C++ developers of any experience level who have not read the full guidelines.

Raw footage of nerdcore rapper Monzy performing outside Stanford's computer science building, shot for the documentary Nerdcore for Life. The set includes his song about the kill -9 Unix command.

Brian Lonsdorf explains why Underscore.js falls short as a functional programming library, then introduces currying, composition and point-free style in JavaScript. He argues for data-last argument ordering.

Herb Sutter's deep C++ and Beyond 2012 talk on atomics and the C++ memory model, covering why programmers chasing top performance need to understand hardware ordering. This is part one of two.

Cliff Click of Azul Systems gives a Google Tech Talk on running Java business applications on a machine with about a thousand cores. He covers hardware and software codesign, including garbage collection hardware and the JIT.

Tantacrul explains how he and engraver Simon Smith designed the free music notation font for MuseScore 3.6. It draws on the history of the SCORE notation application by Leland Smith.

John Hughes, co-creator of QuickCheck, talks about property-based testing of hard systems. He shows production examples where it found very low-level bugs, including issues in the CAN bus standard.

Tantacrul walks through how the MuseScore 4 team was built and how design decisions were made for the overhaul of a huge legacy notation app. It covers playback and engraving quality improvements.

Fedor Pikus's CppCon 2017 talk on C++ atomics, looking at what they let the programmer express and what the hardware actually does. It covers memory ordering and lock-free programming from basic to advanced.

Cliff Click walks through a small performance example on a modern out-of-order CPU. He covers pipelining, ILP, CISC vs RISC, multicore, and why cache misses and the memory subsystem dominate performance.

Part two of Herb Sutter's C++ and Beyond 2012 session on atomic weapons, a deep dive into the C++ memory model, atomics, memory ordering, and hardware behavior. It ends with the modern meaning of volatile.

RustConf 2020 closing keynote by Sian Griffin that dives into Pokemon Blue glitches, notably Missingno and arbitrary-code-execution tricks. It uses them to explain how memory unsafety works and how memory-safe languages like Rust prevent such bugs.

CppCon 2014 talk by Jeff Preshing on how Ubisoft Montreal developed games for multicore hardware, before and after C++11 concurrency support. It goes into atomics and lock-free programming in practice.

In this TED talk, Nobel laureate Daniel Kahneman distinguishes the experiencing self from the remembering self, using examples such as vacations and colonoscopies. He explains how the two perceive happiness differently and what that means for economics, policy and self-awareness.

Part 3 of WIRED's Future Cities series on Shenzhen. It examines how attitudes toward patents and intellectual property differ from the West, and how shanzhai (copycat) manufacturing created an ecosystem of rapid iteration and distribution.

Chuck Marohn of Strong Towns explains how a land value tax differs from an ordinary property tax, why it makes economic sense, and why it is rarely used. It is a short six-minute explainer.

Ahmon Dancy of Franz Inc explains low-level programming in Common Lisp, including off-heap data structures used in AllegroGraph to manage memory outside the garbage collector.

A showcase of the author's fifth-generation quad-core computer built entirely from Minecraft redstone, after two years of development. It features cache, a hardware stack, a GPU driving a 15x15 display, and serial I/O ports.