Symbian system

Symbian is a real-time, multi-tasking, pure 32-bit operating system with low power consumption and low memory usage. It is ideally suited for mobile devices such as mobile phones. After continuous improvement, it can support GPRS, Bluetooth, SyncML, and 3G technologies. . The most important is that it is a standardized open platform, and anyone can develop software for Symbian-enabled devices. Unlike Microsoft products, Symbian separates the general technology of mobile devices, which is the core of the operating system, from the graphical user interface technology. It can adapt well to different input platforms, and it can also enable manufacturers to create their own products. The more friendly interface, in line with personalized trends, is the main reason why users can see different symbian systems. Java programs developed for this platform have now become popular on the Internet. Users can expand the phone's capabilities by installing these software.

In the Symbian development phase, there are three branches: Crystal, Pearl, and Quarz. The first two are mainly aimed at the communicator market, which is also the largest among mobile phones. It is the main force for smart phone operating systems in the future. The first mobile phone based on the Symmabian system was an Ericsson mobile phone that was launched in 2000. The really mature one that caught people’s attention at the same time was the Nokia 9210, which was launched in 2001. It uses the Crystal branch system. The Nokia 7650 and 3650 launched in 2002 are the models of the Symbian Pearl lineup, of which the 7650 is the first smartphone based on a 2.5G network. They all belong to the Symbian 6.0 version. A model introduced by Sony Ericsson also uses Symbian's Pearl branch. The version has been developed to 7.0. It was developed specifically for 3G networks. It can be said that it represents the most powerful mobile operating system today. In addition, Symbian began to support external storage devices such as MMC, CF cards, etc. from version 6.0, which enabled its powerful expansion capabilities to be fully utilized, making it possible to store more software and various large-capacity multimedia files.

Symbian is divided by version. Following February 2005, Symbian launched a new mobile operating system OSv9.0. So far, there have been 6.0, 6.1, 7.0, 7.0s, 8.0, and 9.0 versions. In March 1999, Symbian introduced the Symbian 5.0 operating system. Its main core is a combination of network, wireless text, e-mail, business cards, and personal information assistants. It also has a browser that supports standard web pages, supporting java language support. , allows Symbian to run small applications. However, this version uses very few models, and there is not much difference with the EPOC.

Symbian 6.0 adds support for GPRS, WAP 1.2 browsers, and Bluetooth technology on the basis of 5.0. Users can run third-party programs based on C++ and J2ME. And Symbian 6.1 is mainly compared with Symbian 6.0 to increase the USB support. Symbian 6.0's main features are: support for voice calls and data communications, Bluetooth and WAP support, security features (SSL, HTTPS, WTLS), 16-bit Unicode support, multi-language display, "PersonalJava 3.0" and "JavaPhone 1.0" .

Symbian 7.0 supports multi-mode and 3G mobile phones (zones), which allows manufacturers to launch Symbian OS mobile phones that can run on all networks worldwide, and can reuse many of them without major code changes. There are currently software applications. 7.0 includes some new communications, messaging, networking, and application development technologies, as well as improvements to security- and certification-related features. Other features of Symbian OS 7.0 include: support for flexible user interfaces such as Nokia's Series 60; support for several audio/image formats and many APIs for game developers; full encryption and authentication management, based on secure communication protocols including HTTPS , WTLS and SSL) and certified application installations; and Over-the-air (OTA) SyncML synchronization support.

In February 2004, Symbian released Symbian 8.0 when it authorized LG and other companies. This version improves the performance of real-time systems and improves the compatibility of existing operating systems. In addition, the software tools of Symbian OS 8.0 improve the functionality of the remote access control system and use regulatory devices to eliminate the interference that mobile phone users experience when using value-added services. This system contains absolutely modern multimedia and Java devices that support multiple standards, including JSR118, CLDC1.1 (JSR139), MobileMedia (JSR135), 3D image data (JSR184), and JTWI 1.0c (JSR185). Finally, the new OS also supports SDIO.

In February 2005, Symbian, a well-known mobile phone software manufacturer in the United Kingdom, introduced a new mobile operating system software, OSv9.0, which supports higher-pixel digital cameras and 3D game animation. The operating system software has high requirements for the operating environment. It currently runs on a fast processor chip provided by the British chip maker ARM and needs the support of related designs and other tools to help handset manufacturers save time and develop other versions. cut costs. The software can handle 2 megapixel digital pictures and even send stereo music to wireless headphones. What's more, it does not require sync software to export MP3 files from a PC.

The Series60 is the most widely used system version in smartphones. The Series 60 system is also divided into three versions: 6.0 OS, 7.0 OS, and 8.0 OS. The most intuitive factor that distinguishes the Series 60 is the resolution of the screen. The Series 60 supports a resolution of 176*208 pixels, but the S60 will also support 240*320 pixels and 352*416 pixels. The S60 is the interface that has the most third-party software or games.

The easiest way to identify the Series80 interface is to see if the phone supports a full keyboard. For example, Nokia's high-end series 9210, 9300, or even 9500 all use the full keyboard. The easiest way to identify Series 90 is to use a touch screen with a resolution of up to 640 x 320 pixels. The Series90 should be the strongest platform for mobile games and entertainment, but because there are too few handset models with the Series90 interface, and third-party software has little support, the S60 is still the player's first choice.

S40 or S60 refers to the upper platform of Nokia mobile phones. The S60 is a smartphone and the underlying operating system is Symbian. Nokia 128*128 screens are all S40 1.0. And 128*160 is S40 2.0.

In addition, in S40, 3100 supports java MIDP 1.0, so the maximum support for 64KB of java; 6230 supports java MIDP 2.0, so the maximum support of 128KB of java40 and 60, including 90, as well as the previous 30, are for different operating systems with nokia In terms of 40, it is Nokia's own mobile phone operating system. For low-end customers, it supports the development of kjava. Its processor efficiency is low, the memory is low, and the screen size is 128*128.

S60, is based on the Symbian operating system, which is the previous epoc, its processor is arm9, the processing efficiency is high, the memory is quite large, the screen size is 208*176 and supports the development of kjava and C++90, belonging to the handheld device, The Symbian operating system has strong features and is equivalent to a PDA.

In fact, technically speaking, S40 and S60 are different on the system platform, just like WIN98 and WIN2000, but unlike mobile phones, the screen size is indeed a gateway, so that the platform is not easily backward compatible, but some games are also Also make different versions.

Of course, S40 is not only a gap on the screen, but also a performance gap. Generally speaking, the quality of games developed by S60 is much higher than that of S40. Unfortunately, S60 is more expensive than the S40. A lot of ah.