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Advent of Computing

Advent of Computing

Sean Haas 199 Episodes Aug 17, 2026

Advent of Computing explores the surprising and often overlooked history of computing. Each episode delves into the stories behind technologies we take for granted, revealing how older innovations have shaped our modern world. The show covers a wide range of topics, from early hardware to software and the people behind them.

Episodes

Episode 187 - What's Better Than Binary?
Episode 187 - What's Better Than Binary? Aug 17, 2026 01:05:10 Binary is synonymous with digital computing. But is it the only way to crunch numbers? The short answer is no. The long answer, well, that's today's topic. Today we are talking about ternary, aka base 3. From it's early uses in the 19th century, to actual computers, and even theoretical designs; ternary proves to be a difficult topic to track down... and a very unique one. Selected sources: https:
LIVE from VCF West - Wait, Is That Really UNIX?
LIVE from VCF West - Wait, Is That Really UNIX? Aug 3, 2026 48:08 It's no secret that I've been fascinated by odd UNIX clones for a while. When I got invited back to speak at VCF West this year I decided to share that fascination with a captive audience. In this talk we look at Idris and CROMIX, and ask the simple question: why would you want UNIX free UNIX? VCFed will be posting the video version of this presentation in the coming weeks. I'll add a link here on
Episode 186 - MADDIDA
Episode 186 - MADDIDA Jul 19, 2026 01:07:11 In 1950 Northrup unveiled their MAgnetic Drum DIgital Differential Analyser. The machine is a wild piece of technology; a rendering of an analog computer in digital encoding. But how did we get here? How did a project to guide a missile lead to a mass produced computer? And what does it have to do with suspiciously dry martinis? Selected Sources: https://sci-hub.st/10.1109/MAHC.2003.1179869 - 2003
Episode 185 - Is EMUL-8ion a Form of Flattery?
Episode 185 - Is EMUL-8ion a Form of Flattery? Jul 6, 2026 01:01:24 EMUL-8 is a fascinating programming language. It's described in just one paper from 1977. It's a mix of features from APL, LISP, ALGOL, and SNOBOL. And, I think, it's a wonderful window into how counterculture and home computing collided.
Episode 184 - What Is A Programming Language?
Episode 184 - What Is A Programming Language? Jun 21, 2026 01:09:34 I mean that both in the specific and the abstract. This episode we are looking at APL, which stands for A Programming Language. APL was developed in the mid 50s, but didn't see a working implementation until 1965. It's a language that truly looks like no others, but has some odd parallels to everything from BASIC to LISP to linear algebra. Learn APL at: tryapl.org https://www.jsof
Dale Biagio - Hello, World!
Dale Biagio - Hello, World! Jun 14, 2026 31:44 Dale Biagio(author of Hello, World!) got in touch with me recently. He said he had a book full of short histories of programming languages. Better still, it has sources! How could I resist! In this episode I sit down with Dale to talk about the intersection of technical and human histories. You can find more about Hello, World! at Dale's website: https://helloworldthebook.com/
Episode 183 - A Digital Gap?
Episode 183 - A Digital Gap? May 31, 2026 54:58 I've been browsing old compur surveys and trying to build up a comprehensive data set. What I've found is a little surprising: between late 1945 and 1949 only 10 new computers entered service. Once we get to the 50s that number explodes. What's going on here? What caused the gap between the first digital machines and the explosion of computers in the 50s? In this episode I try to answer that quest
Episode 182 - Spinning Memories
Episode 182 - Spinning Memories May 18, 2026 58:31 What connects IBM, the NSA, the Third Reich, and high fidelity recordings of symphonies? The answer is: magnetic drum memory. Join me as I lose all track of scope and plot to discovery just how and why magnetic drum memory was invented. Like Advent of Computing? Then check out the after show! Adjunct of Computing is now LIVE: YouTube Spotify Apple Podcasts
Episode 181 - RAYDAC
Episode 181 - RAYDAC May 3, 2026 01:12:18 In 1947 Raytheon signed a contract to make their first computer. It would be their last... at least for many many years. The fruits of this contract was RAYDAC. Early digital computers were odd, to say the least. And RAYDAC distinguishes itself. From zig-zag delay lines to hunting tapes to freon cooling, it truly is a unique machine. Selected Sources: https://ed-thelen.org/McGee_Book-4.2.2.pdf - M
Episode 180 - You Wouldn't Magnetize a Tape!
Episode 180 - You Wouldn't Magnetize a Tape! Apr 19, 2026 01:06:28 The image of a mainframe is almost always accompanied by it's companion: the magnetic tape drive. For decades magnetic tape served as the medium of choice for computing. It was faster than punch cards, and more available than hard drives. But where did it come from? Is it a borrowed technology like the vacuum tube? Like Advent of Computing? Then check out the after show! Adjunct of Computing is no
Episode 179 - Programming Block by Block
Episode 179 - Programming Block by Block Apr 4, 2026 01:01:59 In which we discuss GPSS: the General Purpose Simulation Language. As for as languages go, this is a unique one. It's designed for certain types of simulations. It's code is just a handy way to feed a flowchart into a computer. It's design is closer to an analog computer than it is to a programming language. Yet GPSS is Turing Complete. Step inside and prepare to be... confused! The big source of
Episode 178 - The Programma 101
Episode 178 - The Programma 101 Mar 22, 2026 01:02:46 The Olivetti Programma 101 isn't quite like any other machine. On first glance it looks like a big desktop calculator. Inside, it's a purebred computer... but strange one. It uses twisted spring steel for memory, has no addresses, and it's machine code looks more like a spell than a program. It's existence is due, in no small part, to a man being very mean to GE engineers. Like Advent of Computing

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