> > On 1/5/2006 at 1:10 AM ard at p850ug1.demon.co.uk wrote: > > >By my definition, FPGAs, PALs, GALs, CPLDs, gate+flip-flops, transistors, > >valves, relays, are all fine. > > Magnetic core logic? Yes, and pulleys+string, hydraulics, whatever..... I was giving examples, not an exhaustive list. -tony