Units of time Unit Definition fs femtoseconds(10-15 seconds) ps picoseconds(10-12 seconds) ns (1GHz) nanoseconds(10-9 seconds) us microseconds(10-6 seconds) ms miliseconds (10-3 seconds) sec seconds min minutes(60 seconds) hr hours(3600 seconds) ASIC Design,by Yan BoASIC Design, by Yan Bo 7 Units of time Unit Definition fs femtoseconds (10-15 seconds) ps picoseconds (10-12 seconds) ns nanoseconds (10-9 seconds) us microseconds (10-6 seconds) ms miliseconds (10-3 seconds) sec seconds min minutes (60 seconds) hr hours (3600 seconds) (1GHz)