Sinclair ZX80 / ZX81 / Z88 Forums

Hi All, I have a Maplin ZX81 Voice unit for the I'm keen to test with my ZX81. It looks like I will need to build an expansion I/O board as I can't find any available. Has anyone else built their own DIY I/O board and has any recommendations or advice? Many thanks! :) http://i68.tinypic.com/zx8abr.j...

Hi All!
I wondered if anyone would share their personal advice on the best methods for cleaning the 16K RAM pack and the edge connector on the zx81.
Thanks!

Hi,
Preferably a plus, as I'm interested in the extra I/O and MIDI possibilities I have read about, but happy with a classic.
Thanks

Hi All! I've arrived from over at Stardot and enjoy the friendliness and support over there too :) The research centre collection is just starting its collection but includes several BBC Micros, ZX81s, Spectrums, a Jupiter Ace and other bits and bobs including hundreds of old microcomputer magazines...

Hi! It's a research event for faculty and students at the University of Sussex in Brighton later this month, so sadly not a public event But if anyone local is kind enough to loan a ZXpand that would be great

Hi All,
I was wondering if anyone has a ZXpand that they might be willing to part with, I am keen to buy one for an upcoming computing event that I would like to feature the ZX81. Happy to wait till they are back in stock but would love people attending the event not to miss out on the ZX81

Hi, Old time Sinclair user (not the mag) here. I work in maintaining a collection of microcomputer technologies for a research centre in a university, in addition to having never really quit using any computer I ever owned to make computer graphics and music since my first ZX 48k. Nice to meet you a...