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Because I have not tested all electronic circuits mentioned on this pages, I cannot attest to their accuracy; therefore, I do not provide a warranty of any kind and cannot be held responsible in any manner.
ZX81 pages
6. March 2009 - 21:55 — admin
Sinclair ZX81 is not dead! 
A few days ago I've found these amazing pages about the ZX81 personal computer, written by Wilf Rigter: ZX81 RULES.
I remember ZX81 since the 80's as a slow, simple and a little weird (but genial!) computer (I'd a Spectrum in these times, of course). :) But people like Wilf make me change my angle of view: ZX81 is a genial computer, which can does unbelievable things in a conjunction with contemporary devices and circuits. Go to Wilf's pages and make yourself sure!