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Shtetl-Optimized » Blog Archive » The Power of the Digi-Comp II: My First Conscious Paperlet edit / delete
"I study the Digi-Comp II, a wooden mechanical computer whose only moving parts are balls, switches, and toggles. I show that the problem of simulating (a natural abstraction of) the Digi-Comp, with a polynomial number of balls, is complete for CC (Comparator Circuit)". A nice short example, with some interesting discussion on what the Digi-Comp can and can't compute and why.
to complexity computability cs digicomp mechanica retrocomputing theory ... on 11 July 2014
Dropping In on Gottfried Leibniz—Stephen Wolfram Blog edit / delete
A nice overview of Leibniz's contributions to computational thinking, with many photos of his notes.
to ag0700 computational-thinking computing history leibniz maths retrocomputing ... on 10 July 2014
A collection of vintage computers, with restoration details -- from a New Zealand perspective.
to electronics nz repair retrocomputing ... on 01 July 2014
Gallery SZY: GCC Archives edit / delete
Pictures from the 80s of a company that did arcade and Atari 2600 games: lots of development systems.
to arcade atari cross-development games retrocomputing ... on 17 June 2014
IBM 51xx PC Family Computers edit / delete
Manuals and repair information for IBM 51xx machines. I ought to get my AT up and running again at some point, now I've found all the bits of it. (One of the classiccmp posters has one that's been upgraded enough to run Linux, which is kind of neat...) -- As of 2015 I've now done this, and this site was very helpful!
to at electronics etext ibm pc repair retrocomputing xt ... on 16 June 2014
Michael J Mahon's Home Page: NadaNet, AppleCrate, Synth edit / delete
Using 17 Apple II motherboards and a homebrew network system to build a 16-voice synthesiser is a bit silly. Also quite cool, though.
to amusements apple2 distributed network retrocomputing synth ... on 10 June 2014
60bits.net - Control Data Mainframe information edit / delete
"The emphasis is on Michigan State University's obscure SCOPE/Hustler operating system."
to 60bit cdc mainframe retrocomputing ... on 25 May 2014
Charles MacDonald's Home Page edit / delete
Reverse-engineering various 80s/90s consoles and arcade systems.
to arcade games nintendo retrocomputing sega ... on 25 May 2014
A History of Computing at Daresbury Laboratory edit / delete
to academia daresbury retrocomputing science uk ... on 25 May 2014
socz80 FPGA retro microcomputer edit / delete
Z80 machine in an Papilio board, with ports of CP/M 2.2, MP/M and UZI.
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tasty by Adam Sampson.