He estimates he owns more than 200 vintage computers and devices in his Seattle home. Vintage computer festivals bring collectors togetherThis year more than 3,500 people attended the two-day Vintage Computer Festival in early August that celebrated the 50th anniversary of Apple, founded in 1976 in nearby Cupertino, Calif. Growing interest is reflected in more demand for vintage computers in online marketplaces, Klein said. Restoring the ‘grandfather of the modern computer’Dersch drove down from Seattle to showcase the pride of his collection: the Xerox Alto. Similar events for collectors spread around the worldNow Klein channels his passion for vintage computers into organizing festivals, repair workshops, swap meets and other events as president of the Vintage Computer Federation.