Overview
Symbian
Symbian operating system, formerly known as British treasure E. ON companies ( Psion ) of the EPOC operating system, EPOC is the Electronic Piece of Cheese from taking the first letter, its intent is "the use of electronic products can be as simple as eat the cheese" This is what it is upheld in the design concept. To counter Microsoft and Palm , smart mobile devices to obtain the field of the future market opportunities, in June 1998, Nokia , Motorola ( Motorola ), Ericsson ( ERICSSON ), Mitsubishi ( MITSUBISHI ) and Po E. ON (Psion) in London, co- Symbian was established investment company. Nokia 2008 has been fully acquired.
The first mobile phone with Symbian OS
2000,
Ericsson launched a phone called the R380sc. R380sc is the first platform based on Symbian mobile phone operating system, Symbian OS, support WAP Internet access, support for handwriting recognition input.
Symbian's hardware requirements
In general, Symbian system's main hardware components following the central processor , ROM, RAM, IO devices and power supply. Various hardware components perform their duties and ensure the operation of the system. Symbian systems generally use 32-bit processor , system operation and data operations rely on processors to complete. Symbian ROM systems and equipment within the cure comes with various functions. RAM is used to store the current activities of the program and the system is running the necessary data, and a variety of temporary swap file, or cache such as WAP, in addition to storing the user is responsible for some of the data. IO devices include general control devices such as keyboards, touch screen, memory card expansion, Bluetooth interface. Compared to batteries or external power supply. The Series 60 mobile phones, for example, generally use TI 's ARM processor, a memory card inserted, the system generally there are 4 logical storage drives: C drive - mobile phone comes with user storage disk, or Flash Memory, which advantage of the chip does not require power to maintain data, and can be modified at any time, D drive is running a free virtual memory, disk cache, E, is the user's MMC card inserted, Z plate curing system is that we said before to the ROM.
Symbian OS features
Advantages
As a Symbian operating system is already quite mature, has the following features: First, to provide wireless communication services, the computing and telephone technology combined. Second, the operating system curing. Third, the relatively fixed hardware. Fourth, lower development costs. Fifth, the powerful open. Sixth, low power consumption, high processing performance. Seventh, the system is running the security and stability. Eighth, the multi-threaded operation mode. Ninth, a variety of UI, flexible, easy to operate. More than nine, is not unique to Symbian OS, but Symbian OS to highlight these features, and play full advantage of these features, let the better for users. Symbian has the advantage of its market share has been accounted for most of the handheld communications device vendor support, strong advocacy at the NOKIA has become an open, easy to use, professional development platform to support the C + + and java languages. At the same time providing a platform-level support for the following areas: Protocol standards: TCP, IPv4, IPv6, Bluetooth, Java, WAP, SyncML, USB Communications capabilities: support multi-tasking, object-oriented component-based approach 2G, 2.5G and 3G systems and application development, GSM , GPRS , HSCSD , EDGE , CDMA (IS-95) and the 2000 Technical support Information customization: SMS , EMS , MMS , EMAIL and FAX support Application of rich: card management, contacts, information services Security and stability: data integrity support, reliable and efficient battery management, data synchronization , data encryption , certificate management, software installation management Multimedia: pictures, music and even video viewing Internet: Internet connection and browsing and content downloads, POP3/SMTP/IMAP4 Internationalization: support for Unicode, multiple fonts and text formatting
Shortcomings
Symbian models lower the hardware configuration used, and the various models used in the processor frequency lower, although the system to achieve high processing performance, but in terms of multimedia performance is still not satisfactory . In multimedia, Symbian OS to the mainstream media format support is poor. Although using a variety of Symbian OS platform to adapt to different people and all kinds of needs, but also to the Symbian OS brought a restrictive barrier to development. Various third-party software is not compatible between platforms, and software developers a platform for more focused on a particular, greatly reducing the various platforms available for third-party software, giving users a certain amount of inconvenience. Poor compatibility between versions of Symbian OS is a place for improvement, whenever a new version of Symbian OS release and a product launch, the system's compatibility has become an enemy of their development. Considerable part of the software requires software developers to follow the development of new version to be resolved. Inadequate attention to detail, only available to manufacturers as a symbian
core and UI, many details need to manufacturers to add features, but many manufacturers will focus on the product's versatility and overall performance, etc., often overlooked some basic functionality. Some models even workday of these features require third-party software can be achieved, which undoubtedly are not familiar with the symbian users brought great inconvenience.
Symbian-based UI
Overview
Currently according to the different man-machine interface, Symbian system UI (User Interface User Interface) platform is divided into Series 60, Series 80, Series 90, UIQ and so on. In order to more strongly support the Symbian platform, Nokia 2001, Nokia Mobile Software set up a new department, to the development of mobile communication-related software . In order for mobile phone manufacturers have more choices to put the development of Symbian mobile phones, Nokia developed three different user interfaces: Series 60/80/90. Series60 mainly to the mobile phone keypad, Series 80 is designed as a full keyboard, Series 90 is designed for the way the stylus. Another important Symbian platform is one hundred percent by the turn of investment developed by UIQ Technology UIQ.
