<s>
Bit	B-Protocol
time	I-Protocol
is	O
a	O
concept	O
in	O
computer	B-Architecture
networking	I-Architecture
.	O
</s>
<s>
It	O
is	O
defined	O
as	O
the	O
time	O
it	O
takes	O
for	O
one	O
bit	O
to	O
be	O
ejected	O
from	O
a	O
network	B-Protocol
interface	I-Protocol
controller	I-Protocol
(	O
NIC	O
)	O
operating	O
at	O
some	O
predefined	O
standard	O
speed	O
,	O
such	O
as	O
10Mbit/s	O
.	O
</s>
<s>
The	O
time	O
is	O
measured	O
between	O
the	O
time	O
the	O
logical	O
link	O
control	O
sublayer	O
receives	O
the	O
instruction	O
from	O
the	O
operating	B-General_Concept
system	I-General_Concept
until	O
the	O
bit	O
actually	O
leaves	O
the	O
NIC	O
.	O
</s>
<s>
The	O
bit	B-Protocol
time	I-Protocol
has	O
nothing	O
to	O
do	O
with	O
the	O
time	O
it	O
takes	O
for	O
a	O
bit	O
to	O
travel	O
on	O
the	O
network	O
medium	O
but	O
has	O
to	O
do	O
with	O
the	O
internals	O
of	O
the	O
NIC	O
.	O
</s>
<s>
To	O
calculate	O
the	O
bit	B-Protocol
time	I-Protocol
at	O
which	O
a	O
NIC	O
ejects	O
bits	O
,	O
use	O
the	O
following	O
:	O
</s>
<s>
To	O
calculate	O
the	O
bit	B-Protocol
time	I-Protocol
for	O
a	O
10	O
Mbit/s	O
NIC	O
,	O
use	O
the	O
formula	O
as	O
follows	O
:	O
</s>
<s>
The	O
bit	B-Protocol
time	I-Protocol
for	O
a	O
10Mbit/s	O
NIC	O
is	O
100nanoseconds	O
.	O
</s>
<s>
Bit	B-Protocol
time	I-Protocol
is	O
distinctively	O
different	O
from	O
slot	B-Protocol
time	I-Protocol
,	O
which	O
is	O
the	O
time	O
taken	O
for	O
a	O
pulse	O
to	O
travel	O
through	O
the	O
longest	O
permitted	O
length	O
of	O
network	O
medium	O
.	O
</s>
