FW: [LINK] Is it Gb or GB?

Daniel Rose drose at nla.gov.au
Tue Nov 7 15:21:33 AEDT 2006


>>>It even adjusts for the difference of 10 v 8.

10 v 8 what?

"10 vs 2^3"

in other words, 1000 vs 1024, or decimal vs binary.

IIRC, bytes are only relevant inside a computer's circuit board.
Architectures can use any number of bits for a byte, (or is that a
word), seven was/is popular with some architectures.

Ostensibly then, networks and storage systems are independent of the
architecture.  What is 200 Bytes on one system might be a different
number on a different system.  For precision then, networks and disks
are measured in bits, and we use the prefixes kilo, mega and giga
correctly, as in giga-litre or kilo-metre.

Of course, the side effect is that people by a 200Gb disk and get
~180GB, which just adds to the overall inscrutability and disappointment
people tend to get from computers.

When exact meaning is important, one can use mebibyte and gibibyte to
refer to the various powers of 2 (1024-based figures).








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