100BaseT
Another term for fast Ethernet,
an upgraded standard for connecting
computers into a local area
network (LAN). 100BaseT Ethernet
works just like regular Ethernet
except that it can transfer
data at a peak rate of 100
mbps. It's also more expensive
and less common than its slower
10BaseT sibling.
10BaseT
The most common form of Ethernet
is called 10BaseT, which denotes
a peak transmission speed
of 10 mbps using copper twisted-pair
cable. Ethernet is a standard
for connecting computers into
a local area network (LAN).
16-CAP
Carrierless Amplitude/Phase
Modulation with 16 constellation
points: The modulation technique
used in the 51.84 Mb Mid-Range
Physical Layer Specification
for Category 3 Unshielded
Twisted-Pair (UTP-3).
3D API
3D application programming
interface This generic term
refers to any API that supports
the creation of standard 3D
objects, lights, cameras,
perspectives, and so on. Such
APIs include Argonaut's BRender
and Microsoft's Reality Lab.
3D sound
When we hear things in the
physical world, our ears pick
up a variety of audible clues
that tell us such things as
"a truck is approaching
me rapidly, from behind and
to the left, and it's remarkably
near." Until recently,
however, most computer-generated
sound was merely stereophonic--sounds
could appear from the left
or right, but they had no
real depth. The latest 3D
sound techniques, including
A3D from Aureal and Creative
Labs' Environmental Audio,
use techniques to trick our
ears into positing sounds
in three dimensions. Many
3D audio techniques require
a specially designed sound
card to work.
3G
3G or 3rd generation mobile
technology is the generic
term used to describe the
next generation of mobile
telephony systems. 3G systems
will expand mobile telephony
capabilities include voice,
text and data transmission
over wireless networks
4GL
Fourth generation language.
Digital surround sound
is recorded on six separate
tracks: front left, front
right, front center, rear
left, and rear right, with
an extra track reserved for
very low bass. Although analog
surround sound (Dolby Pro
Logic) also often uses six
speakers, the analog format
simply splits a traditional
stereo signal into front and
rear components.
64-CAP
Carrierless Amplitude/Phase
Modulation with 64 constellation
points.
64QAM
64-state quadrature amplitude
modulation This digital
frequency modulation technique
is primarily used for sending
data downstream over a coaxial
cable network. 64QAM is very
efficient, supporting up to
28-mbps peak transfer rates
over a single 6-MHz channel.
But 64QAM's susceptibility
to interfering signals makes
it ill suited to noisy upstream
transmissions (from the cable
subscriber to the Internet).
88open
A consortium with the aim
of creating a multivendor
open computing environment
based on the Motorola 88000
RISC processor family |
