I think you mean "milliseconds". The prefix "milli" is used in the metric system of measurements to mean "one thousandth of", so a "millisecond" is one thousandth of a second, which means that there must be 1000 of them in 1 second.
100
1000
There is no such unit as "macro second".
100 mini seconds
Anytime you have a number divided into "TENTHS" the answer is 10!
100
100
How many men was in the second bull run?
Saturn is the second largest planet with many rings.
The second word of many limericks is typically "was."
1000
1000
100 hectoseconds in a second
0.042 second
1,000,000,000 = 1 second
1,000,000,000,000
0.72ns