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This is an open sourced replia of the Schickard calcuating machine from ca. 1621. See en.wikipedia.org/wiki/Wilhelm_Schickard and github.com/jnweiger/Schickard for details.
Typewriter as I/O interface, the TTL based computer is in the box on the left. www.horniger.de/computer/ta/index.html
The Nixdorf 820 family had a unique core memory, which acted as ROM and was quite simple to produce. The picture shows a device for threading those memorys. Only the lit green cores needs to get wired. The system was controlled by a punch tape. There is only a German entry in Wikipedia to the system: de.wikipedia.org/wiki/Nixdorf_System_820
Each cube representing one pixel in one of four different colors. The cubes and can turn around in both directions (left turn, right turn). Deutsches Technikmuseum Berlin is currently working on bringing a 4x as big wall up and running and plan to integrate this wall in their permanent exhibition (sdtb.de/).
16bit personal computer, based on a K1810WM86 CPU, which was the Russian clone of an Intel 8086: de.wikipedia.org/wiki/A_7100 (German only).
AT&T 3B2/310 (upgraded 300), with 4425 terminal as console, and a 5620 "Blit" terminal running 'layers' on another tty.
Reading a collection of ROMs for the 6800 based Altair 8800 computer with my PROMdate tool. trmm.net/PROMdate
My home made Covox Speech Thing Digital-to-Analog LPT (parallel port) stereo sound card. Fairly easy to build. The sound is not perfect but it plays stereo, 44kHz!
My home made Covox Speech Thing Digital-to-Analog LPT (parallel port) stereo sound card. Fairly easy to build. The sound is not perfect but it plays stereo, 44kHz!
The MessagePad was the first series of personal digital assistant devices developed by Apple Computer (now Apple Inc.) for the Newton platform in 1993. Some electronic engineering and the manufacture of Apple's MessagePad devices was done in Japan by the Sharp Corporation. The devices were based on the ARM 610 RISC processor and all featured handwriting recognition software and were developed and marketed by Apple. The devices ran the Newton OS.
en.wikipedia.org/wiki/MessagePad
Retrocomputing (a portmanteau of retro and computing) is the use of early computer hardware and software today. Retrocomputing is usually classed as a hobby and recreation rather than a practical application of technology; enthusiasts often collect rare and valuable hardware and software for sentimental reasons. However some do make use of it.[1] Retrocomputing often gets its start when a computer user realizes that expensive fantasy systems like IBM Mainframes, DEC Superminis, SGI workstations and Cray Supercomputers have become affordable on the used computer market, usually in a relatively short time after the computers' era of use.
en.wikipedia.org/wiki/Retrocomputing
Con il termine retrocomputing si indica una attività di "archeologia informatica" che consiste nel reperire, specialmente a costi minimi, computer di vecchie generazioni, che hanno rappresentato fasi importanti dell'evoluzione tecnologica, ripararli se sono danneggiati, metterli nuovamente in funzione e preservarli.