Script language and the processing system which the original going wide person whom it waits developed. It is designed to be object direction language structure, but also programming the usual procedure type is possible. It designates that programming which is thought that with real object direction language such as C++ language it is exaggerated, is supported as purpose. The writer being the individual, it is the free software which is developed. Ruby, has merit about such as the same powerful text throughput as Perl and simple grammar. Because it is interpreter type language, when the program is drawn up, it is possible to execute directly without doing processing such as compilation. Not only on UNIX, it is transplanted even in each platform of MS-DOS, Windows, Mac OS and BeOS.

Ruby ON Rails

Reading: [rubionreiruzu]
Field:
WWW > Server > Ruby ON Rails
Programming > script > Ruby ON Rails

It was constructed by Ruby of script language, the framework for Web application development. There are also times when it is called “Rails” simply. It is developed by Denmark David Heinemeier Hansson, it is open as the open source. Especially, the cord/code where it is necessary to write anew at the time of Web application developing which utilizes the database, is decreased substantially and development period can be shortened.

Ruby ON Rails MVC (Model-View-Controller) supports architecture, the view which indicates the model and the data which bear the processing regarding the database, has the function which forms the poult shape of the controller which controls those automatically. If compilation reading renewal deletion of the data (only CRUD), is the simple Web kind of application which is done, only it draws up the data table and automatic generation poult shape with being able to develop most parts it finishes. Because many of Web application have designated CRUD processing as core, it is possible, can shorten development period to automate the compilation of many cords/codes by using Ruby ON Rails.

Ruputer <[rapiyuta]>

Reading: [rapiyuta]
Field:
Mobile > PDA > Ruputer

The SEIKO instruments (SII and present [seikoinsutsuru]) sold in 1998 June, the microminiature computer of watch type. It is attached to the body in the body, it is known as the ride in advance product “of [uearaburukonpiyuta]”.

As for size approximately 5cm four side, at scantness 1.8cm and weight approximately 50g, with the band locking in the same way as the watch in the arm, it is possible to carry about. The picture with monochrome liquid crystal display of 102×64 pixel, full size 8 letter (half angle 16 letter) can indicate ×5 line. Operation four buttons and it does with every single the “cursor pointer” which is on the substance side button to the track/truck point which is front lower part.

16 bit microprocessor MN10200 of Matsushita Electric Industrial Co., Ltd. make is loaded to CPU, the main memory of 128KB, the masked ROM of 512KB which records OS and the like, 512KB (RuputerPro of the superior type 2MB) has built in flash memory. Using the infrared ray, it can communicate with other Ruputer and PDA. Connecting to the serial port of the personal computer at the private docking station, sending and receiving it does, it is possible information same period to do the file. When with the button electric battery, 1 day 1 hour you use, you call power source that 4 months you can use.

RWIN

Reading: Earl Wien
Full spelling: Receive Window
Field:
Network technology > connection > RWIN
Communication service > broadband > RWIN

The computer which receives the data by way of TCP/IP, the value which shows the feed pitch reception verification to transmitting end.

With TCP/IP at each time the data of the fixed quantity is received because the system that is taken, you send reception verification, the unit of RWIN reaches “the byte”.

For example, when the data of 1024KB is received with the computer where RWIN becomes 64KB, when first 64KB is received, when you send reception verification, next receive to 128KB and sending reception verification…Until with it becomes the condition which was said, this receives all data, it is repeated, (with this example 16 times).

Also retransmission demand when there is an abnormality in the data which it receives, although the specification which completes with just the minimum data (it is called “Selective ACK”) it is prepared, is done at the data quantitative unit which is appointed basically with RWIN.