About: http://webisa.webdatacommons.org/437824181

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	At the very least, an Arduino or other microcontroller could receive and send basic signals using Audio.
http://www.w3.org/ns/prov#wasQuotedFrom	uchobby.com