Natural Access to Bi-directional Utilities. Doesn’t sound very exciting, does it? But the acronym NABU is becoming one of most interesting, burgeoning spaces for retro computer devs. Thanks to the cheap sale of these once-defunct PCs, more and more people are helping to revitalize a long-defunct cable internet service available before the days of AOL. Thanks to a newly discovered cache of machines in a barn in Massachusetts, they have accessible to anybody with around $100 willing to buy an old-