Still got my ZX81 (why didn't we have an anniversary last year?) and its HUGE 16K memory module. Hasn't worked for a good many years. My Lynx (look it up) works perfectly well, except for the '3' key. My laptop is fair-to-rubbish; it's only(!) got 1/2MB of RAM and the C drive is over 80% full -- of what, I've no idea ... Time to get a Mac!