Advent of Computing

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/

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.
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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.
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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
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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