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[1] [2] In asynchronous DRAM, the interval is specified in nanoseconds (absolute time). [3] In synchronous DRAM , the interval is specified in clock cycles. Because the latency is dependent upon a number of clock ticks instead of absolute time, the actual time for an SDRAM module to respond to a CAS event might vary between uses of the same ...
When UI is used as a measurement unit of a time interval, the resulting measure of such time interval is dimensionless. It expresses the time interval in terms of UI. Very often, but not always, the UI coincides with the bit time, i.e. with the time interval taken to transmit one bit (binary information digit).
Time unit used for sedimentation rates (usually of proteins). picosecond: 10 −12 s: One trillionth of a second. nanosecond: 10 −9 s: One billionth of a second. Time for molecules to fluoresce. shake: 10 −8 s: 10 nanoseconds, also a casual term for a short period of time. microsecond: 10 −6 s: One millionth of a second. Symbol is μs ...
The time from an atomic clock onboard each satellite is encoded into the radio signal; the receiver determines how much later it received the signal than it was sent. To do this, a local clock is corrected to the GPS atomic clock time by solving for three dimensions and time based on four or more satellite signals. [11]
CPU time (or process time) is the amount of time that a central processing unit (CPU) was used for processing instructions of a computer program or operating system. CPU time is measured in clock ticks or seconds. Sometimes it is useful to convert CPU time into a percentage of the CPU capacity, giving the CPU usage.
It is the time between the gate input becoming stable and the gate output becoming stable. Manufacturers often refer to the time from the input changing to 50% of its final input level, to the output reaching 50% of its final output level; this may depend on the direction of the level change, in which case separate fall and rise delays t PHL ...
10 nanoseconds – half-life of lithium-12; 12 nanoseconds – mean lifetime of a charged K meson [3] 20–40 nanoseconds – time of fusion reaction in a hydrogen bomb; 30 nanoseconds – half-life of carbon-21; 77 nanoseconds – a sixth (a 60th of a 60th of a 60th of a 60th of a second) 96 nanoseconds – Gigabit Ethernet Interpacket gap
1 millisecond (1 ms) – cycle time for frequency 1 kHz; duration of light for typical photo flash strobe; [5] time taken for sound wave to travel about 34 cm; repetition interval of GPS C/A PN code; 1 millisecond – time taken for light to travel 204.19 km in a single mode fiber optic cable for a wavelength of 1550 nm (frequency: 193 THz).