Imperial College London media library : APL demonstration 1975 edit / delete

Bob Spence demonstrates APL (basic operators, operator composition, function definition) in 1975. While I'm not sure I'd want to give a lecture using a teletype, the ability to scribble on the output with a biro is definitely useful!

to apl retrocomputing teaching ... 6 days ago

MCS 494, UNIX Security Holes, Fall 2004 edit / delete

Dan Bernstein's Unix security module. This is a bit dated now, but the material is interesting, and the assessment materials have some nice ideas.

to security teaching unix ... on 10 November

Willy Tarreau's stuff: Look back to an end-of-life LTS kernel : 3.10 edit / delete

"The end of the 3.10 branch is a good opportunity to have a look back at how that worked, and to remind some important rules regarding how to choose a kernel for your products, or the risks associated with buying products running unmaintained kernels."

to kernel linux lts security software-engineering support ... on 05 November

The Doom Wiki at DoomWiki.org - Doom, Heretic, Hexen, Strife, and more edit / delete

Exactly what you would expect for the title. Most of the content is about particular (fan-made) levels, but there's good stuff on the technology here too.

to 3d doom games id level-design retrocomputing ... on 07 October

Industrial Alchemy edit / delete

Unusual valves, semiconductors and display devices - all the things that were competing with Nixie tubes, for example.

to electronics history led retrotech semiconductor valve ... on 07 October

"Chinese, Japanese, Vietnamese and Mongolian language site" edit / delete

I'd previously seen the Chinese poetry in Pink Floyd lyrics section of this site, but there's a lot of interesting stuff here about the relationships between different Asian languages and writing systems.

to chinese japanese language linguistics mongolian vietnamese ... on 24 September

Recording and Measurement Microphones edit / delete

More generally, circuits for electrically-balanced output from electret microphones. I keep meaning to build this for some of the Sanken mic capsules I've got...

to audio balanced elecret electronics microphone recording ... on 20 September

Roll Scanning Information Page edit / delete

A very large collection of scanned piano rolls, converted to MIDI.

to history midi music piano piano-roll ... on 20 September

Gemini PDA Android & Linux keyboard mobile device | Indiegogo edit / delete

Psion 5-style PDA with a real keyboard using a modern processor. Unfortunately I suspect this is going to suffer from poor kernel support, since they've chosen Mediatek...

to gemini keyboard linux mediatek pda ... on 14 September

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