Ultra Wide SCSI <Wide Ultra SCSI>

Alias:
Wide Ultra SCSI-3 and Wide SCSI-3
Field:
Personal computer > I/O > SCSI > Ultra Wide SCSI

At portion of SCSI-3 standard, simultaneous transfer capacity at 16 bit width specification of transfer rate 40MB/s.

In the specification which raises transfer rate with the drive frequency of former SCSI-2 (Fast Wide SCSI) as time, maximum cable length at the time of single-end drive with 8 connections to 1.5m, with 4 unit connections has become to 3m.

If with differential drive (HVD) it operates, as for existing together of the single-end equipment at the time of 16 unit connection of those which it is not possible to 25m extended possibility.

Transfer rate of the Ultra SCSI specification which at 8 bit width does transfer (Narrow) is 20MB/s.

UMA

Reading: U m a
Full spelling: Unified Memory Architecture
Field:
Personal computer > extended card > UMA

Portion of main memory of the computer graphic memory (VRAM) the technology which is allotted.

It is not necessary to prepare private memory in one for graphics, because you can measure cost decrease that much, it is adopted for the personal computer of price low. It is the technology which the video tip/chip which is loaded on the motherboard directly and the graphic score which is integrated in chip set utilize.

Although chip set integrated graphic function spreads, accompanying, recently adoption example is increasing. Graphic integrated chip set “i810/i815” of the Intel corporation and so on has adopted UMA.

UMD

Reading: U magnetic disk memory
Full spelling: Universal Media Disc
Field:
Multimedia > game > game machine for home > UMD

SONY [konpiyutaentateinmento] (SCE) portable type game machine “PSP” (PlayStation Portable) the optical disk which is adopted. Being something which stores the disk of the diameter 6cm which going around is smaller than single CD to the cartridge, it has the capacity of 1.8GB.

The cartridge has become shutter less system of both sides see through, as for the weight which also the disk includes approximately 10g. As for the disk using single sided two layer, the system which it reads and writes with the red laser of wave length 660nm is taken, CD2 can record to 1.8GB which hits to the half.

As for recording type, records the game of PSP other than “PSP Game” profile, records the sound of ATRAC3plus type “UMD Audio” and records the animated picture of MPEG-4 type “UMD Video” and so on is prepared. The identification by media ID and the contents are protected powerful encoding with 128 bits AES by.

UML

Reading: U m l
Full spelling: Unified Modeling Language
Field:
IT industry > system development > UML

In software development of object oriented, standardized notation in the program design figure. It was developed by 3 people Grady Booch, James Rumbaugh and Ivar Jacobson of the Rational Software corporation. Until recently, as for notation of the object direction design standard of 50 or more had been flooded, UML it was recognized in 1997 November, but by OMG as standard. Major enterprise of the Microsoft corporation and the IBM corporation, the Oracle corporation and the Unisys corporation etc has stated support.

UML tool <UML tool>

Reading: U m l tool
Field:
IT industry > system development > UML tool

Using UML which is modeling language, the software in order models the system, to draw as the figure. Mainly it is something which is used with the purpose which draws the design figure of the software in the actual place of software development. By the fact that the UML tool is used, to understand modelling the structure and behavior of the software and the function etc which is necessary for the software easily, can the figure which you inscribe draw simply on GUI.

With the UML tool, the use case figure, the class figure, the sequence figure and the state transition diagram which are defined in UML (the state chart figure) and the like following to the notation where UML decides the figure, it can draw. In addition, it is there are also some which had the function which forms the figure of part such as function and the class figure which form the poult shape of the source code automatically conversely automatically from the source code from the figure. In addition, in order to form the poult shape in the class figure automatically from the sequence figure, there are also some which are and can convert between the figures mutually.