Symbian

The Symbian operating system is designed for mobile phone Symbian operating system, it contains the joint database, user interfaces structure and public tool reference implementation, whose predecessor is a Psion's EPOC.

overview

Symbian operating system's predecessor was the British treasure meaning the company EPOC operating system, and Electronic Piece of Cheese EPOC is to take the first letter, its original intention is "the use of Electronic products can be as simple as eating Cheese" which is it in the design that insist on philosophy.

To counter the Microsoft and the Palm in the future intelligent mobile terminal, field of market opportunities, June 1998, nokia, MOTOROLA, Ericsson, mitsubishi and treasure meaning the joint investment in London was the Symbian. The 2008 has been nokia full takeover.

Symbian OS by the first paragraph of mobile phone

2000 Ericsson mobile phone called R380sc launched. First R380sc is based on the Symbian platform Symbian OS operating system supports WAP phones, Internet, support handwritten recognition input.

Symbian's hardware requirements

Generally speaking, the main Symbian system under several hardware components, the central processor, ROM, RAM, IO equipment and power supply. Various hardware each doing his own job, guarantee the operation of the system. Symbian system generally USES the 32-bit processors, system operation and data operation on processor to complete. ROM Symbian systems and equipment in curing cabin each function. RAM is to keep the current activity program and system running necessary data, as well as all kinds of temporary exchange files, or as WAP cache, in addition is also responsible for some of the data store users. IO devices include general control equipment, such as a keyboard, touch screen and expanded memory, bluetooth interface, etc. Power is the battery or external power supply. To better phone, for example, 60 Texas instruments will normally be adopted in the ARM processor, Memory, the system is commonly after inserting existing four logical storage drive: disk C - mobile phone user storage disc, bring that Flash such chips, with the advantages of power is not to need to maintain material, and can be modified at any time, D dish is a free operating Memory virtual cache dish, E dish is the user inserted skillfully card, Z is solidified system, which we said before the ROM to.

Symbian OS features

advantage

Symbian as one paragraph has quite mature operating system, has the following features:

First, the wireless communication services, will provide computing technology combined with phone technology.

Second, the operating system curing.

Third, relatively fixed hardware.

Fourth, lower r&d costs.

Fifth, powerful openness.

Sixth, low power consumption, high processing performance.

The seventh of the operation of the system, safety and stability.

Eighth, multithreading operating mode.

Ninth, a variety of UI, flexible, simple, easy to operate.

Above at nine, not exclusively for Symbian OS Symbian OS, but its these features prominent, and fully these features played advantage, make its better service for customers.

Symbian's advantage is its got occupy market share most of the handheld communication equipment manufacturers in support of the NOKIA, advocating, has become an open and easy to use, professional development platform, support c + + and Java language. Meanwhile in the following aspects: providing a platform level support

Protocol standards: TCP, IPv4, IPv6, bluetooth, Java, WAP, SyncML, USB

Communication ability: support multitasking, object-oriented based on components of 2.5g way 2G, 3G systems and application development and, GSM, GPRS, HSCSD, EDGE, CDMA (IS - 95) and 2000 technical support

Information customization: SMS, EMS, MMS, EMAIL and tlx.number support

Rich: business card management and application, information service etc. Directory

The safe and stable: data integrity support, reliable and efficient battery management, data synchronization, data encryption, certificate management, software installation management

Multimedia: pictures, music and even video browsing

Internet: Internet connection and browse, and content downloads, POP3 / SMTP/IMAP4

Internationalization: support Unicode, various font and text format

faults

The Symbian type low, and the hardware configuration of the frequency of the processor model with low, although the system can make it to gain higher processing efficiency, but in multimedia has still not satisfactory. Symbian OS in multimedia aspects of mainstream media formats support poorer. Symbian OS while using a variety of platform, to adapt to different people and all kinds of needs, but it also gives Symbian OS brings a restrictive development obstacle. Each platform between third-party software not compatible, and software developers much focused on a platform of different platform, greatly reducing the third party software available to users and bring some inconvenience. Version is between compatibility sent a Symbian OS needs to improve local, whenever the new version of the Symbian OS release and a product comes out, compatibility became its development of a foe. Quite a number of part of the software needs software developers follow up, developing new version can be solved. Details given adequate attention, because only offered to manufacturers a symbian UI, many details and kernel function need to add, but many manufacturers will focus on products manufacturer of multi-function and comprehensive performance and so on, often overlooked some basic functionality. Some models even working days this kind of function need alarm clock can be achieved, the third party software to unfamiliar undoubtedly symbian user has brought great inconvenience.