**Bit time** is a concept in computer networking. It is defined as the time it takes for one bit to be ejected from a Network Interface Card (NIC) operating at some predefined standard speed, such as 10 Mbit/s. The time is measured between the time the logical link control layer 2 sublayer receives the instruction from the operating system until the bit actually leaves the NIC. The bit time has nothing to do with the time it takes for a bit to travel on the network medium, but has to do with the internals of the NIC.

To calculate the bit time at which a NIC ejects bits, use the following:

bit time = 1 / NIC speedTo calculate the bit time for a 10 Mbit/s NIC, use the formula as follows:

bit time = 1 / (10 * 10^6) = 10^-7 = 100 * 10^-9 = 100 nanosecondsThe bit time for a 10 Mbit/s NIC is 100 nanoseconds. That is, a 10 Mbit/s NIC can eject 1 bit every 100 nanoseconds.

Bit time is distinctively different from slot time, which is the time taken for a pulse to travel through the longest permitted length of network medium.

### Other articles related to "bit time, time, bits, times, bit":

... Many data structures in use today have 32-

**bit time**representations embedded into their structure ... to derive but there are well-known data structures that have the Unix

**time**problem ... file systems (many filesystems use only 32

**bits**to represent

**times**in inode) binary file formats (that use 32-

**bit time**fields) databases (that have 32-

**bit time**fields) COBOL ...

... It encodes zero

**bits**as a half

**bit time**of zero followed by a half

**bit time**of one, and while one

**bits**are encoded as a full

**bit time**of a constant level ... The level used for one

**bits**alternates each

**time**one is coded ... from, Miller encoding, which also uses half-

**bit**and full-

**bit**pulses, but additionally uses the half-one/half-zero combination and arranges them so that the signal always spends at ...

... A zero

**bit**is a one-microsecond pulse in the center of the first half of a

**bit time**, and a one is a pulse in the second half of a

**bit time**... Data is sent as 8

**bit**bytes ... A byte is preceded by a

**bit time**that has two pulses (at both 1 and 0

**times**), and ends with a

**bit time**that has another two pulses ...

... a history of holding time_t parties to celebrate significant values of the Unix

**time**number ... As the use of Unix

**time**has spread, so has the practice of celebrating its milestones ... Usually it is

**time**values that are round numbers in decimal that are celebrated, following the Unix convention of viewing time_t values in decimal ...

### Famous quotes containing the words time and/or bit:

“The *time* to enjoy a European tour is about three weeks after you unpack.”

—George Ade (1866–1944)

“The world has always gone through periods of madness so as to advance a *bit* on the road to reason.”

—Hermann Broch (1886–1951)