[GreenKeys] Rock and Roll Teletype 'experts'
ard at p850ug1.demon.co.uk
Wed Jun 15 18:24:21 CDT 2005
> > Said books also contain a description of a lovely electromechanical FIFO
> > system used to store train descriptors on the London Underground (and its
> > associated binary to 1-of-n decoder) ...
> which I suppose are still in use in the New York subway :-)
Well, I'd rather trust the old electromechananical signalling system than
any microprocessor-based thing...
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