Units of time	Abbreviation 	Fraction of a second	Seconds
Millisecond		1ms			Thousandth	 		0.001
Microsecond		1µs			Millionth 			0.000001
Nanosecond		1ns			Billionth 			0.000000001
Picosecond		1ps			Trillionth 			0.000000000001