Assertion: program clock | /r/HasProperty | timer
Facets:
value: at st
type: LOCATION
Source sentences:
text: The "program clock" is a timer that can be programmed with punched paper tape to ring bells or turn machines on and off at preprogrammed times.  at St.
text: The "program clock" is a timer that can be programmed with punched paper tape to ring bells or turn machines on and off at preprogrammed times.
text: The "program clock" is a timer that can be programmed with punched paper tape to ring bells or turn machines on and off at preprogrammed times.