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PODCAST

Advent of Computing

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.

history

All Episodes

01:09:24

Episode 74 - The Elegance of LISP

Advent of Computing ·

2022/01/24

This is the conclusion to my exploration of why LISP is the "mother tongue of artificial intelligence". We pick up from the end of last episode and continue to cover the early days of AI. We follow the meandering path from the FORTRAN List Processing Language and IPL, up to pen-and-paper versions of LISP and into the first true implementation of the language. Along the way we will see just why LISP is called elegant, and how it was tailored for thinking machines. Selected Sources:

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01:10:30

Episode 73 - IPL, AI, and Linked Lists

Advent of Computing ·

2022/01/10

I'll let you in on a secret: I've never understood why LISP is so closely associated with artificial intelligence. I've decided to fix this. In this episode, and the next, I'm tracing the early roots of AI and why list processing is important in the field. This episode we dive into the Information Processing Language, a strange programming language that predates LISP . Along the way we discuss the origin of linked lists, chess playing machines, and a program that could solve logic proofs.

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01:11:26

Episode 72 - Viatron Topples IBM

Advent of Computing ·

2021/12/27

Viatron's System 21 was the computer of the 1970s! ...At least that's what their marketing claimed. Started in 1967 Viatron was set to be one of the most exciting companies of the coming decade. They were offering a desktop sized computing machine, the System 21, that promised to break IBM's domination of the office. The System 21's heart, the so-called "micro-processor", was slated to be built from cutting edge LSI chips. It could automate data processing, replace bulky IBM hardware, and do away

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01:02:35

Episode 71 - 6502, The Mini-Microprocessor

Advent of Computing ·

2021/12/13

No matter how you cut it the MOS Technology 6502 is an important chip. The chip was cheap, simple, and plentiful. This made it perfect for the home computing boom of the late 1970s. But how was this classic created? Today we are looking at Motorola's earliest attempts to seize the microprocessor market, how economic factors impact history, and how trends and forces can conspire to create better technology. Selected sources:

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01:05:11

Episode 70 - The oN-Line System, Part 2

Advent of Computing ·

2021/11/29

NLS, or the oN-Line System, is often looked at as a mile marker in the development of modern computing. It was the first system to use a mouse, one of the first functional examples of hypertext, pioneered remote collaboration, and so much more. But how much do you know about NLS itself? In this series of episode I'm picking apart the system behind the legend. In Part 2 we are looking at the development of NLS itself. Along the way we talk timesharing, strange custom hardware, and complex

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01:02:44

Episode 69 - The oN-Line System, Part 1

Advent of Computing ·

2021/11/15

NLS, or the oN-Line System, is often looked at as a mile marker in the development of modern computing. It was the first system to use a mouse, one of the first functional examples of hypertext, pioneered remote collaboration, and so much more. But how much do you know about NLS itself? In this series of episode I'm picking apart the system behind the legend. Part 1 deals primarily with the early roots of NLS, Augmenting Human Intellect, and Doug Engelbart's vision of hypertext. Surprisingly, a

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01:06:35

Episode 68 - Zork

Advent of Computing ·

2021/10/31

Make sure you have some extra batteries for your lamp, this episode we are delving into the depths of Zork. Written in 1977 Zork would quickly become the epitome of text based adventures, pushing aside all competitors. A lot of this comes down to it's simple gameplay, and the simple fact that Zork is fun to play. But lurking deeper into the game is a hidden treasure. Ya see, the other huge part of Zork's success was it's portability. That was made possible thanks to some sick programming tricks,

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01:03:45

Episode 67 - Debug!

Advent of Computing ·

2021/10/17

This episode I face my greatest fears: computer bugs. We are going to dive into the origin of the term, and examine the origins of debugging. The simple fact is that as soon as computers hit the scene we start finding bugs. Debugging follows very soon after. That part's not too surprising, it's the specifics that get interesting. Modern debugging methods we still use today were first developed on ENIAC, a machine that's anything but modern.

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01:02:53

Episode 66 - Viruses and the PC

Advent of Computing ·

2021/10/03

It's Spook Month on Advent of Computing! Every October we cover the more spooky, scary, and frustrating side of computers. To kick off this year we are looking at viruses again, this time with a special eye to the first infections for IBM PCs and compatible systems. Besides the technical changes, this drops us into an interesting transitionary period. Up to this point viruses had been something of an in-joke amongst hackers and computer nerds, but with the creation of viruses like Brain and

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56:07

Episode 65 - Teletype, Teleprint, and Telegrams

Advent of Computing ·

2021/09/19

In today's episode we take a long hard look at the telegraph, and try to see how character encoding developed. We are dealing with 100% pre-computing technology, but there are some shocking similarities to later digital systems. Selected Sources: https://archive.org/details/electrictelegrap00highrich/page/2/mode/2up - Early history of the electric telegraph http://www.samhallas.co.uk/repository/telegraph/b6_baudot_multiplex.pdf - 1934 pamphlet on the Baudot telegraph

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01:02:59

Episode 64 - Gemini's Tiny Machine

Advent of Computing ·

2021/09/05

Today we are talking about computers in space! 1964 saw the launch of Gemini I, the first spacecraft to carry an onboard computer. The aptly named Gemini Guidance Computer was responsible for guidance, navigation, and safe reentry. Built by IBM it weighed in at a tiny 59 pounds. For 1960's technology there just isn't any comparison to make, it was an amazingly small machine. What secrets does it hold? Did IBM crack some secret code to build such a tiny computer?

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56:45

Episode 63 - What's With The Wedge, Part 2

Advent of Computing ·

2021/08/22

This concludes my series on the distinctive shape of early home computers. In this episode we finally cover the Sol-20 itself, the first system on the market to be shaped like a wedge. More generally, we try to figure out if the Sol-20 was the progenitor of hundreds of machines that followed, or if the wedge was inevitable. For such a simple question, this has become a surprisingly complicated topic. Selected sources:

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58:59

Episode 62 - What's With The Wedge? Part 1

Advent of Computing ·

2021/08/08

Early home microcomputers have a very distinctive shape to them. From the Apple II and the ZX Spectrum, to the Commodore 64 and the Amiga, wedged were the order of the day. I've always wondered why that shape became so popular, and where it came from. Today we start a deep dive into that question, slowly tracing the origins of the first wedge shaped computer. Selected Sources: http://www.leefelsenstein.com/wp-content/uploads/2013/01/TST_scan_150.pdf The Tom Swift Terminal, or a Convivial

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01:01:45

Episode 61 - FRESS and Practical Hypertext

Advent of Computing ·

2021/07/25

Hypertext has really become a core offering of daily life, and defined the face of the Internet for decades. But the links and formatting we know so well only make up part of the story. Today we are looking at FRESS(the File Retrieval and Editing SyStem), a hypertext system developed at Brown University at the tail end of the 60s. What makes FRESS so crucial in the history of hypertext is that it was extensively studied. Multiple experiments were carried out to test if FRESS, and hypertext in

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52:04

Bonus Episode - Q&A

Advent of Computing ·

2021/07/18

It's here! My celebratory question and answer episode! Contains ramblings on my checkered past, why computer history is important, and why FOIA is so cool.

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01:08:05

Episode 60 - COBOL Never Dies

Advent of Computing ·

2021/07/11

COBOL! Just its name can strike terror in the hearts of programmers. This language is old, it follows its own strange syntax, and somehow still runs the world of finance and government. But is COBOL really as bad as it's made out to be? Today we are talking a look at the languages origins and how it's become isolated from early every other programming language in common use. Perhaps most importantly for me, we will see is Grace Hopper should really be blamed for unleashing this beast onto

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01:04:12

Episode 59 - ALOHANET

Advent of Computing ·

2021/06/27

ALOHANET was a wireless networking project started at the University of Hawaii in 1968. Initially, it had relatively little to do with ARPANET. But that relative isolation didn't last for long. As the two networks matured and connected together we start to see the first vision of a modern Internet. That alone is interesting, but what brings this story to the next level is the protocol developed for ALOHANET. Ya see, in this wireless network data delivery wasn't guaranteed. Everyone user shared a

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01:07:27

Episode 58 - Mercury Memories

Advent of Computing ·

2021/06/13

This episode we take a look at the earliest days of computing, and one of the earliest forms of computer memory. Mercury delay lines, originally developed in the early 40s for use in radar, are perhaps one of the strangest technologies I've even encountered. Made primarily from liquid mercury and quartz crystals these devices store digital data as a recirculating acoustic wave. They can only be sequentially accessed. Operations are temperature dependent. And, well, the can also be dangerous to human

en

01:00:45

Episode 57 - Simulated Sumeria

Advent of Computing ·

2021/05/30

Where did educational games come from? According to some, the practice of using games in classrooms started in the early 60s with the appearance of the Sumerian Game. However, the story is more complicated than that. This episode we dive into the Sumerian Game, some of the earliest educational games, and the bizarre legacy of a lost piece of software. Like the show? Then why not head over and support me on Patreon. Perks include early access to future episodes, and bonus

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01:08:12

Episode 56 - TMS9900, an Alternate Future

Advent of Computing ·

2021/05/16

The TI TMS9900 is a fascinating microprocessor. It was the first 16-bit microprocessor on the market, it has a unique architecture that makes it well suited to multitasking, and it was on IBM's shortlist to power the PC. Today we are looking at this strange chip, and the TI minicomputers that predated it's design. Along the way we will construct a theoretical TI-powered PC, and see how home computing could have changed if IBM took a slightly different path. Like the show? Then why not head over and

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