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الخميس، 24 فبراير 2011

The operating system


The operating system used by BlackBerry devices is a proprietary multitasking environment developed by RIM. The operating system is designed for use of input devices such as the track wheel, track ball, and track pad. The OS provides support for Java MIDP 1.0 and WAP 1.2. Previous versions allowed wireless synchronization with Microsoft Exchange Server e-mail and calendar, as well as with Lotus Domino e-mail. The current OS 5.0 provides a subset of MIDP 2.0, and allows complete wireless activation and synchronization with Exchange e-mail, calendar, tasks, notes and contacts, and adds support for Novell GroupWise and Lotus Notes.
Third-party developers can write software using these APIs, and proprietary BlackBerry APIs as well. Any application that makes use of certain restricted functionality must be digitally signed so that it can be associated to a developer account at RIM. This signing procedure guarantees the authorship of an application but does not guarantee the quality or security of the code. RIM provides tools for developing applications and themes for BlackBerry. Applications and themes can be loaded onto BlackBerry devices through BlackBerry App World, Over The Air (OTA) through the BlackBerry mobile browser, or through BlackBerry Desktop Manager.

history of blackberry



The first BlackBerry device, the 850, was introduced in 1999 as a two-way pager. In 2002, the more commonly known smartphone BlackBerry was released, which supports push e-mail, mobile telephone, text messaging, Internet faxing, Web browsing and other wireless information services. It is an example of a convergence (telecommunications)convergent device. The original BlackBerry devices, the RIM 850 and 857, used the DataTac network.

BlackBerry first made headway in the marketplace by concentrating on e-mail. RIM currently offers BlackBerry e-mail service to non-BlackBerry devices, such as the Palm Treo, through its BlackBerry Connect software.

The original BlackBerry device had a monochrome display, but all current models have color displays. All models except for the Storm Series had a built-in QWERTY keyboard, optimized for "thumbing", the use of only the thumbs to type. The Storm 1 and Storm 2 include a SureType keypad for typing, and are the two models that are full touch-screen devices with no physical keyboard. Originally, system navigation was achieved with the use of a scroll wheel mounted on the right side of phones prior to the 8700. The trackwheel was replaced by the trackball with the introduction of the Pearl series which allowed for 4 way scrolling. The trackball was replaced by the optical trackpad with the introduction of the Curve 8500 series. Models manufactured for use with iDEN networks such as Nextel and Mike also incorporate a push-to-talk (PTT) feature, similar to a two-way radio .

الثلاثاء، 22 فبراير 2011

Blackberry

BlackBerry is a line of mobile e-mail and smartphone devices developed and designed by Canadian company Research In Motion (RIM) since 1999.
BlackBerry functions as a personal digital assistant with addressbook, calendar, memopad and task list capabilities. It also functions as a portable media player with support for music and video playback and camera and video capabilities. BlackBerry is primarily known for its ability to send and receive (push) Internet e-mail wherever mobile network service coverage is present, or through Wi-Fi connectivity. BlackBerry has the ability to use wireless data efficiently while using less power than other phones, three BlackBerry's use the same wireless spectrum as only one other smartphone. BlackBerry is a powerful messaging phone with a large array of messaging features in a smartphone today, including auto-text, auto-correct, text prediction, support for many languages, keyboard shortcuts, text emoticons, push email, push Facebook, Twitter and Myspace notifications, push Ebay notifications, push instant messaging with BlackBerry Messenger, Google Talk, ICQ, Windows Live Messenger, AOL Instant Messanger and Yahoo Messenger; threaded text messaging and a customizable indicator light near the top right of all BlackBerry devices. All notifications and conversations from applications are shown in a unified messaging application which third party applications can access. BlackBerry's push gives BlackBerry devices a long battery life. All data on the phone is compressed through BlackBerry Internet Service.