On 3/11/2014 11:26 AM, Gene Heskett wrote: > On Tuesday 11 March 2014 13:25:43 John Kasunich did opine: > >> http://imgs.xkcd.com/comics/standards.png > > Chuckle. But how old is that? we must have at least 20 by now.
A perfect example is the USB "standard". It began with exactly two and only two types of connector, A for hosts and B for devices. Then came Mini B and for some reason early digital cameras all had to have various odd USB connectors, often including A/V out. In 2007 Micro B was introduced and it took stores nearly two years to realize it existed and stock cables with that connector. There's also a few versions of powered USB which are double stacked connectors having one part of the ports and plugs just for extra power. Now there's USB 3.0. The designers of it had an uncommon fit of sanity and made both ends of the standard backwards sympatico with ye olde full size original Type A USB for the host and Micro B for the device. The USB 3.0 device end looks funkyweird but just plug a 2.0 cord into one end of the 3.0 socket. But wait! USB 3.0 gets even more sanity! A USB 3.0 host plug will fit into a USB 1.1/2.0 Type A port and the device will operate at the lower speed. ------------------------------------------------------------------------------ Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/13534_NeoTech _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
