EJB (Enterprise JavaBeans)
EJB components in J2EE specification self-contained layer to application layer and back-end information systems (such as a database or a mainframe computer) tied up.
Conceptually speaking, EJB object encapsulates the business objects and concepts, allowing developers to concentrate on the details of the solution above. From a design point of view, EJB should be lightweight and mutual influence to be combined. This initiative can make a single EJB, regardless of whether it is business applications are likely to adopt an EJB on behalf of self-development, or 3 rd party vendors caught can be used in a variety of applications.
EJB objects are divided into the following three categories: Session Beans, Entity Beans and Message-driven Beans. According to the required bean behavior, certain characteristics determine the type used in Bean.
ELD Electroluminescent Display
EL display, a flat (PANEL.htmlFLAT-PANEL) display, from the phosphorescent material placed between the two panels, one panel vertical wires, and the other piece high quality wire, phosphorous wire through the upper and lower panels on the pressure and the light-emitting electricity .
Embedded System Hardware
Micro Hifi system, one for a specific equipment design and manufacture of computer systems typically use one processor (PROCESSOR) with a program stored in ROM combination is used to control instruments or equipment.
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