A collection of materials relating to the history of computing.
Please submit sites with APF MP1000 based computers.


Legacy APF computers including the Imagination Machine and MP1000.
Please submit sites with APF MP1000 based computers.
Colossus was the world's first programmable (to a limited extent) digital electronic computer. It was built by the British Post Office Research Station at Dollis Hill, by Thomas Flowers and crew to a design by Max Newman and associates of Bletchley Park. It was primarily designed for cryptanalysis in an attempt to break one of the cyphers used by the German military for its most secure strategic communications during WWII.
Information about legacy Commodore computers: KIM-1, C64,Amiga, etc...
Please submit only sites dealing with legacy Commodore systems.
Information about legacy Cray supercomputers.
Please submit only sites about Cray computers.


Digital Equipment Corporation Computer related sites.
Please submit sites only dealing with DEC (Digital Equipment Corporation) computers.
History relating to the evolution of computing equipment.
Please submit sites that only relate to general computer theory and history.


Legacy HP computer information.
Please submit only sites dealing with legacy HP systems. ( < 1980)


Old IBM mainframes and minicomputers manufactured before 1980.
Please submit only sites dealing with IBM computers manufactured before 1980.
Intel-based historical computers from the 1970 through 1980s.
Please submit only sites about legacy Intel computers and ICs.
Retrocomputing is the use of computer hardware generally judged obsolete. One example would be to use a Cambridge Z88 or a Tandy Model 100 to do your work instead of the latest Pentium, multimedia laptop. Some people have no use for or can't afford a modern computer and choose to work on older computers instead. If you use the computer only do do word processing perhaps you are satisfied with an Amstrad PCW. A related subject is retrogaming and abandonware. It's a bit different and seems to be mostly based on wanting games based on good gameplay instead of effects.
Tandy made some of the best, most powerful computers a long time ago.
Please submit sites dealing with Tandy computer systems only.
Old discrete to IC-based UNIVAC computers.
Please submit only sites with old UNIVAC computer information.
Legacy Xerox PARC minicomputers including the Alto, Alto II, and Star.
Please submit only sites dealing with legacy Xerox computers.