A clock is an instrument for measuring, indicating and maintaining the time. The word clock is derived ultimately (via Dutch, Northern French, and Medieval Latin) from the Celtic ...

Clocks" is a song by English alternative rock band Coldplay. It was written by all members of the band for their second album, A Rush of Blood to the Head.

From the Simple English Wikipedia, the free encyclopedia that anyone can change

A clock is an instrument for the measurement of time (e.g. in seconds). It supplies a numerical comparison between the durations of different time intervals.

Em eletrônica e especialmente em circuitos digitais síncronos, o clock é um sinal usado para coordenar as ações de dois ou mais circuitos eletrônicos.