VDSL high-speed non-symmetrical loop
Can be said to present time when all ISP industry to promote the upgraded version of the ADSL service, you can use ADSL bandwidth than the current increase, the upload speeds from 1.5Mbps ~ 2.3Mbps, download speeds from 13Mbps ~ 52Mbps, but the same as with ADSL, transmission distance limit the scope of the specification is set to 310 m ~ 1375 meters shorter than the ADSL.
As the transmission distance is short, so suited for urban areas to build, but also compatible with fiber optic networks and Ethernet at the same time build low cost, about the same as with ADSL, so the domestic demand for bandwidth due to response, has begun to actively upgrade, Chunghwa Telecom to start against the equipment procurement.
However, VDSL are more applicable to intelligent buildings and other large office space to meet the cost of network deployment, in the distance would not have had if the signal problem. Technology in 1994, officially launched in the United States, but of course failed due to lack of content.
VDSL also through existing telephone lines and equipment through a central office terminal facilities to increase the data transfer bandwidth.

VESA Video Electronics Standards Association
A display card (GRAPHIC CARD) and display (MONITOR) an organization of vendors dedicated to develop computer display device specifications.

VGA Video Graphic Array
A display system specification, resolution 640X480, from 262,144 kinds of color display 256 colors simultaneously, the output analog (ANALOG) signals is the most popular color display system, while the present system specifications than VGA computer display is good, but all also supports VGA mode.

Virtual Circuit Network
Virtual circuit, in the packet-switched (PACKET SWITCHING.htmlPACKET-SWITCHING) network, when the two computers to start building links, the two computers can use that link as a direct circuit between two computers to transmit data, but the actual on this circuit does not exist, the message is connected through other lines only served and no one directly connected to two computers line.