ocr: Measuring Time Time units for measuring fractions of a second One millisecond equals 1/1000 ofa second. One microsecond equals 1/1000,000 ofasecond. One nanosecond equals 1/1000,000,000 ofa scond. One picosecond equals 1/1000,000,000,000 ofa second. One secondi 1S equivalent to: 1000 milliseconds.. One thousand msec 1,000,000 microseconds.. One million usecs 1,000,000,000 nanonoseconds. One billion nsecs 1,000,000,000,000 picoseconds.. One trillion psecs
