Keywords: InsideQuartzCrystal.jpg Inside construction of a typical HC49 case quartz crystal en wikipedia OhanaUnited 2006-10-05 Altzone wikipedia en Altzone original upload log page en wikipedia InsideQuartzCrystal jpg 2006-10-05 10 49 Altzone 1276×1467× 223404 bytes <nowiki>Inside construction of a typical HC49 case quartz crystal</nowiki> Crystal oscillators History of technology Time |