Advent of Computing

Sean Haas

Welcome to Advent of Computing, the show that talks about the shocking, intriguing, and all too often relevant history of computing. A lot of little things we take for granted today have rich stories behind their creation, in each episode we will learn how older tech has lead to our modern world.

Play

Open in

26 episodes
fortnightly
Avg 56 min
English

Episodes 26

Newest Oldest Longest

All20 Unplayed20 In progress0 Played0

Counted on this page — what you have heard stays on this device, so it is not something the list can be paged by.

#192
Sunday · 28 min
Episode 192 - Local Computer Held Hostage!
Have you ever wanted to use your computer, only to realize that it had been taken hostage? Over the decades there have been a number of cases where machines have been used as leverage against their owners. Today we look at tales of these digital kidnappings. Like Advent of Computing? Then check out the after show! Adjunct of Computing is now LIVE: YouTube Spotify Apple Podcasts Join the conversation on the OFFICIAL discord server: https://discord.com/invite/GpFNu3DTU2
October 11 · 25 min
Episode 191 - The BHP Virus
I bet you can't make a virus for a home computer. That challenge was the start of an interesting saga. It would end with an honest to goodness computer virus spreading among Commodore 64 users. That virus may have made it as far as America and Turkey. It at least infected the offices of a computer magazine. Like Advent of Computing? Then check out the after show! Adjunct of Computing is now LIVE: YouTube Spotify Apple Podcasts Join the conversation on the OFFICIAL discord server: https://discord.com/invite/GpFNu3DTU2
#190
October 4 · 29 min
Episode 190 - Machine Room or DEATH TRAP!?
Boo! Welcome to Spook Month 2026! I start off my scary coverage by looking at the dangers of the mainframe rooms of the 50s and 60s. We all know that running computers can be a drag. But can it be deadly? Answering that question takes me through government documents, maintenance manuals, and odd recollections of days gone by. Like Advent of Computing? Then check out the after show! Adjunct of Computing is now LIVE: YouTube Spotify Apple Podcasts Join the conversation on the OFFICIAL discord server: https://discord.com/invite/GpFNu3DTU2
September 27 · 1 hr 5 min
Episode 189 - The IBM 701
At the end of the 1940s IBM stood at a crossroads. The punch card company had yet to enter the electronic computer market. Forces within and without were pushing them in that direction, but many man in blue suits would resist the coming change. Out of this climate emerged the Type 701, IBM's first commercial machine. How did it beat the odds and make it to market? And what even did folk do with these early machines? Like Advent of Computing? Then check out the after show! Adjunct of Computing is now LIVE: YouTube Spotify Apple Podcasts Join the conversation on the OFFICIAL discord server: https://discord.com/invite/GpFNu3DTU2
September 13 · 1 hr 3 min
Usagi Electric and the LGP-21 Restoration
Who can't resist Librascope hardware? Well, me, for one. And David from Usagi Electric is in the same boat. In this episode we sit down to talk about his LGP-21, how he got it, how he got it working, and what the machine can do! Subscribe to Usagi Electric to see the full project: https://www.youtube.com/@UsagiElectric
#188
September 1 · 52 min
Episode 188 - Training and Teaching with the Bi-Tran Six
How did you learn about computers? And how in depth was your education? For some the answer is the Bi-Tran Six: an educational machine released in 1965. This was one of the first computer trainers, and it represents a very interesting take on design. It's a machine that's small, simple, and can even be disassembled while running. But exactly how was it designed, and what was it used for? What makes the Bi-Tran Six so different from other machines? Like Advent of Computing? Then check out the after show! Adjunct of Computing is now LIVE: YouTube Spotify Apple Podcasts
#187
August 17 · 1 hr 5 min
Episode 187 - What's Better Than Binary?
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://www.mortati.com/glusker/fowler/fowlerbio.htm - Information and a reconstruction of Fowler's contraption https://dl.acm.org/doi/epdf/10.1145/776378.776392 - Part I of the TERNAC papers, rationale! Like Advent of Computing? Then check out the after show! Adjunct of Computing is now LIVE: YouTube Spotify Apple Podcasts
August 3 · 48 min
LIVE from VCF West - Wait, Is That Really UNIX?
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 once that's up. SEE my slides, here: https://docs.google.com/presentation/d/1v21An2jTGbKn4HV7Orr7xQcjnj3Cju_iMgNX50UcjeI/edit?usp=sharing Install Co-Idris: https://github.com/hansake/Whitesmiths-Idris-OS Install ST-Idris: https://github.com/9nut/IDRIS-OS-for-Atari-ST And DEFINITELY install CROMIX: https://www.sydneysmith.com/wordpress/run-cromix/
#186
July 19 · 1 hr 7 min
Episode 186 - MADDIDA
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 paper on MADDIDA Like Advent of Computing? Then check out the after show! Adjunct of Computing is now LIVE: YouTube Spotify Apple Podcasts
#185
July 6 · 1 hr 1 min
Episode 185 - Is EMUL-8ion a Form of Flattery?
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.
#182
June 21 · 1 hr 9 min
Episode 184 - What Is A Programming Language?
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.jsoftware.com/papers/APL.htm - A Programming Language
June 14 · 31 min
Dale Biagio - Hello, World!
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/
#182
May 31 · 54 min
Episode 183 - A Digital Gap?
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 question by finding out just what was going on during this digital gap. Like Advent of Computing? Then check out the after show! Adjunct of Computing is now LIVE: YouTube Spotify Apple Podcasts
#182
May 18 · 58 min
Episode 182 - Spinning Memories
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
#181
May 3 · 1 hr 12 min
Episode 181 - RAYDAC
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 - McGee on his experience programming RAYDAC https://sci-hub.st/10.1109/JRPROC.1948.232626 - A Digital Computer for Scientific Applications https://www.jstor.org/stable/2002859 - The Logical Design of RAYDAC Like Advent of Computing? Then check out the after show! Adjunct of Computing is now LIVE: YouTube Spotify Apple Podcasts
April 19 · 1 hr 6 min
Episode 180 - You Wouldn't Magnetize a Tape!
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 now LIVE: YouTube Spotify Apple Podcasts
April 4 · 1 hr 1 min
Episode 179 - Programming Block by Block
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 the show: https://dl.acm.org/doi/epdf/10.1145/960118.808382 - The Development of GPSS Like Advent of Computing? Then check out the after show! Adjunct of Computing is now LIVE: YouTube Spotify Apple Podcasts
#178
March 22 · 1 hr 2 min
Episode 178 - The Programma 101
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? Then check out the after show! Adjunct of Computing is now LIVE: YouTube Spotify Apple Podcasts
March 9 · 51 min
Dan Temkin - Forty-Four Esolangs
Dan Temkin has been a long time friend of the show. I finally got the chance to sit down and talk with him about one of his latest projects. Forty-Four Esolangs is a "The first artist's monograph of programming languages". During this interview we keep circling around one very crucial question: what really is a programming language? Get the book and learn more about esolangs here: https://danieltemkin.com/Esolangs
#177
February 23 · 57 min
Episode 177 - Getting Real with RSX
Who wants to hear me make incorrect assumptions about old software? RSX is a system that, from the outside, can sound like it has a similar story to that of UNIX. First developed for the PDP-15 in 1969, RSX becomes much more well known when it migrates to the PDP-11. It becomes a multitasking and multiuser system. A key difference is niche. While UNIX is a very general purpose system RSX is built for real time. That leads to something very unique.

Showing 1–20 of 26 episodes