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I love the power bus on this thing. The keyboard also connects through this bus. You might mistakenly assume that it is electronic, but in fact there is only one circuit board in the entire thing, made up of discreet components. It is mostly mechanical.
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!
There is a sheet of glass glued to the front of the CRT; this glue has deteriorated over time causing the bubbled, mould-like 'screen rot' effect seen here. The only solution is to painstakingly remove the glue (and thereby the glass sheet, leaving the CRT face bare).
Three thumbscrews in the back, one on the left side of the tape reader, and four underneath the nameplate on the front. Remove all screws, the Local/Line switch and the manual roller knob, and then lift off the cover.
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 35 year old interdata model 70 (oldest still-operating computer in Australia, we believe (EDIT: decomissioned late 2008, unplugged and carted away to the Sydney Powerhouse museum early 2009). Can anyone prove us wrong?). The 2MB disk pack sits out of the cabinet otherwise it fails, and we don't have too many spares left. I'm looking forward to this being decomissioned (ie, I have some hope of understanding the new system), but I certainly will miss the drone of 10,000 fans.
The adhoc chassis on the far end was the interdata's shared memory->10mbit ethernet interface. It had been there for over a decade. I do remember walking past it one night, and the whole computer crashed, so the entire observing stack needed a reboot.
This device is able to not only work with numbers, but also with units. It's based on RPN: rechentechnik.foerderverein-tsd.de/qpc10/index.html (German only).
presentazione dell'Osborne 4 (a in fondo) e dell'Osborne 1 (in primo piano) Foto di Vittorio Giordano - www.cameraconvista.org