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Millisecond ms or msec Definition - A millisecond (ms or msec) is a unit of time that represents 1/1000th of a second. It is one of the more useful chronological...
A nanosecond (ns or nsec) is one billionth (10 -9) of a second and is a common measurement of read or write access time to random access memory (RAM). A picosecond is one trillionth (10 -12) of a second, or one millionth of a microsecond.A femtosecond is one millionth of a nanosecond or 10 -15 of a second and is a measurement sometimes used in laser technology. An attosecond is one quintillionth (10 -18) of a second and is a term used in photon research. microsecond (us or Greek letter mu plus s) is one millionth (10 -6) of a second.