About: http://webisa.webdatacommons.org/257523735

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Deteriorating components, particularly crystals and vacuum tubes, cause reduction of safety margins and are a prncipal source of error in digital computing and pulse communication.
http://www.w3.org/ns/prov#wasQuotedFrom	ieee.org