A microsecond (us or Greek letter mu plus s) is one millionth (10 -6 ) of a second. For comparison, a millisecond (ms or msec) is one thousandth of a second and is commonly used in measuring the time to read to or write from a hard disk or a CD-ROM player or to measure packet travel time on the Internet.
What can be measured with microseconds?
A Microsecond is equivalent to 1000 nanoseconds and a 1/1000 of milliseconds. One millisecond is one thousandth of a second which is basically used for measuring time to write or read from a CD-ROM or a hard disk. It is also used to calculate the packet time on the Internet.
What happens in microseconds?
A microsecond is equal to 1000 nanoseconds or 1⁄1,000 of a millisecond. Because the next SI prefix is 1000 times larger, measurements of 10−5 and 10−4 seconds are typically expressed as tens or hundreds of microseconds.