A clock is an instrument used to measure, keep, and indicate time. The clock is one of the oldest human inventions, meeting the need to measure intervals of time shorter than the natural units: the day, the lunar month, and the year. Devices operating on several physical processes have been used over the millennia.
Clock steht fürein Taktsignal (Digitaltechnik) CLOCK, Circadian Locomotor Output Cycles Kaput, Gensequenz Clock (Lied), 1997 von Coal Chamber Clock (Band), The Clock, Comicfigur The Clock US-Film, dt.: Urlaub für die Liebe Clock (Restaurant), schwedische Fastfoodkette