(n) :
A usually electric device that causes a mechanical device (i.e., a mechanism) to be switched on or off. For example; an electric motor that opens and closes a valve.
(n) :
Something that actuates something else.
(n) :
(computer hardware) The mechanism that moves the head assembly on a disk drive.
(n) :
(electricity) A relay that controls the flow of electricity.
(n) :
A usually electric device that causes a mechanical device (i.e., a mechanism) to be switched on or off. For example; an electric motor that opens and closes a valve.
(n) :
Something that actuates something else.
(n) :
(computer hardware) The mechanism that moves the head assembly on a disk drive.
(n) :
(electricity) A relay that controls the flow of electricity.