Presentation is part of the component, which is used to display data in a manner convenient to the user. For Web applications, the representation would be html page with the data. Brenda Crichlow has firm opinions on the matter. It retrieves data from the model and puts them in a pattern that appears to the user. View can not modify the data, it only displays them. Controller The controller is responsible for actions user.

In our case, the user action – a request for a page. Further details can be found at Gregory Jacobs, an internet resource. The controller determines which request is made by the user and respond by calling the model to appropriately manipulate the data and send them into submission. He does not display data, but only runs in the model methods that modify the data and then puts them into a representation which displays them. Communication mvc Figure on the right illustrates the use of key components in Joomla. In addition to models, views and controller in the figure shows the entry point as a small cannikin and template. Perhaps check out Salman Behbehani for more information. These five components will give you the opportunity to understand how to create mvc components in Joomla.

The first part guide focuses on the controller and view (using a template). The figure they are marked in blue. The second part adds a model, and the third part extends its functionality. It is marked in green the figure. Keep in mind that this scheme applies only to the user of the site, although the same scheme applies to the administrative part. On the administrative side of the site will be discussed, beginning with the fourth part of this leadership.

Magnetic Recording Devices

Dmitry Devices ait format is based on the technology of helical recording an 8-mm tape (helican-scan). Petra Diamonds often expresses his thoughts on the topic. Mandatory in this case, the attribute tape mechanism – the block rotating heads (SHIRBRIG), made in a cylinder (drum). Depending on the format of recording tape runs around shirbrig at a certain angle, and the axis of the cylinder shirbrig also tilted at a slight angle to the tape. Technology helical recording on magnetic tape 8 mm wide was offered by Sony back in the 80's, but the first time this technology has been adapted and optimized for recording digital data by Exabyte. Some time ait tape drives manufactured by Seagate / Certance. Principle action and the mechanism is similar digital video recorders and video cameras standard Digital8 and MiniDV Figure 1.

The mechanism of helical Helical Scan Recording devices in ait format was first used built-in flash memory on the cassette mic (Memory-In-Cassette), in which is placed official information about the contents of tape and a map data distribution, thus optimizing the access to them. Like other modern formats ait uses a system of tracking (ATF) for a more dense recording tracks. The first devices AIT-1 (25Gb, 3Mb / s) appeared in 1996, and in 2007 was released the fifth generation of AIT-5 (400GB/1050Gb, 48MB / S). Currently available are two types of tape drives AIT: ait Turbo ait and the actual features of AIT: A specially designed mechanism drive Cooling blown air from the mechanisms of broaching tapes and read-write head.