About: http://webisa.webdatacommons.org/439009532

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	FIG. 21, panel D, shows a programmable add/subtract block with no carry input or carry output, with a MODE signal to control whether the circuit adds or subtracts.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com