Where are the deficiencies of Saipan system? Saipan system advantages and disadvantages

The predecessor of Saipan operating system is the English version of Psion's EPOC operating system. The EPOC is the first letter of the Electronic Piece of Cheese. It means "When using electronic products, it can be as simple as eating cheese. ” This is the philosophy it insists on designing.

There are many types of user interfaces for Symbian-based smartphones, including open platforms like UIQ, Nokia's S60, S80, S90 series, and closed platforms like NTT DoCoMo's FOMA. This adaptability allows the use of Symbian operating system smartphones to form a variety of types (such as folding, candy bar, keyboard input or touch pen input, etc.).

The class is based on EPOC, and its architecture is similar to many desktop operating systems. It includes preemptive multitasking, multiple threads of operation, and memory protection. Saipan's biggest advantage is that it is designed for portable devices, but under limited resources, it can run for months or even years. This is due to the memory saving, the use of Saipan-style programming concepts and the clearing of stacks. Using these functions with other technologies will result in reduced memory usage and minimal memory leakage. Similar techniques are also used to save disk space (although in Saipan devices, hard disks usually refer to flash memory) and memory card usage space. Moreover, Symbian programming uses event-driven, when the application does not handle events, the CPU will be shut down. This is achieved through a programming concept called active objects. Proper use of these technologies will extend battery life. These technologies make Saipan's C++ very professional and have a steep learning curve. However, many Saipan devices can also be used with O2, Python, Visual Basic, Simkin, and Perl with J2ME and self-developed Java.

In order to fight against Microsoft and Palm and gain market opportunities in the future of smart mobile devices, in June 1998, Nokia, Motorola, Ericsson, Mitsubishi and Psion jointly invested in London, England. Saipan was established. In 2008 it has been acquired by Nokia in full.

Saipan is a standardized, open platform that anyone can use to develop software for Saipan-enabled devices. Unlike Microsoft products, Saipan separates the general technology of mobile devices, that is, the kernel 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 provide products for themselves. Creating a more user-friendly operation interface is in line with the trend of personalization. This is also the main reason why users can see different Symbian systems. Java programs developed for this platform have now become popular on the Internet, and users can expand the capabilities of mobile phones by installing these software.

Saipan 5.0 was launched in March 1999. It integrates web, wireless text, e-mail, business card books, and personal information assistants. It also has a browser that supports standard web pages. With java support, Saipan can run small J2ME program.

Saipan 6.0 adds support for voice calls, GPRS, WAP 1.2 browsers, and Bluetooth technology to enhance communication security. The system is a 16-bit operating system and users can run programs based on C++ and J2ME. Saipan 6.1 then added support for USB.

Saipan 7.0 supports multiple network modes and supports 3G networks.

Saipan 8.0 improves real-time system performance and improves compatibility. This version also includes multimedia and Java devices that support multiple standards, including JSR118, CLDC1.1 (JSR139), MobileMedia (JSR135), 3D image data (JSR184), JTWI1.0c (JSR185), and SDIO.

Saipan 9.0 was launched in February 2005. It supports higher-pixel cameras and 3D images, can process 2 million-pixel images, supports wireless headphones, and can directly copy files from a computer via USB.

1. Provide wireless communication services and combine computer and telephone technologies.

2, the operating system curing.

3, relatively stable hardware composition.

4, lower research and development costs.

5, a strong openness.

6, low power consumption, high processing performance.

7. The system is safe and stable.

8, multi-threaded mode of operation.

9, a variety of UI, flexible, easy to operate.

The hardware configuration adopted by the Symbian model is relatively low, and the frequency of the processor used in various types of models is relatively low. Although the system can enable it to obtain higher processing functions, the performance in terms of multimedia is still not satisfactory. In terms of multimedia, SymbianOS has adopted a variety of platforms to adapt to different groups of people and various needs, but it has also brought a restrictive obstacle to the development of SymbianOS. Third-party software is incompatible between platforms. And software developers are more focused on a certain platform, which greatly reduces the inconvenience brought to users by third-party software available on each platform.

The poor compatibility between versions is also a place that SymbianOS needs to improve. When new versions of SymbianOS are released and products are available, system compatibility becomes a major enemy of their development. A considerable part of the software needs software developers to follow up and develop a new version to be solved. The attention to details is not enough, because Symbian only provides a kernel and UI to the manufacturer, many details of the function need to be added by manufacturers, but many manufacturers focus on the multi-functional and comprehensive performance of the product, often ignoring some of the basic functions, some Models and even workday alarm clocks require third-party software to be implemented. Finding undoubtedly brings great inconvenience to users who are not familiar with Symbian.

Saipan fell from the throne of the hegemony system. All the "fans of the Confession" lamented the search for being eliminated. Looking back at this piece of history now, the more likely reason is that Nokia's hardware technology is too successful. Its hardware gene has dragged the pace of Nokia's reform. It is too persistent in the concept of "good hardware is really good."

In the past, Saipan mobile phones were based on the idea of ​​using a PC. The layout of mobile phone pages was hierarchical. To listen to songs, you had to open it from the home page to the program to the music file layer through the keyboard or touch screen. However, the iPhone interface uses a tiled type. , canceled the button, use more human intelligence. While Nokia is from Finland, the biggest advantage of the Finns is the benefits and the ultimate pursuit of craftsmanship. Therefore, there is a market for crash-resistant, waterproof mobile phones.

However, now that people are talking about "user experience", "it is not enough." In the Internet era, users are not using hardware but software. Mobile phones are only carriers and applications are the core. Nokia managers have long realized the importance of software and realized the need to transition to the Internet. In 2007, Nokia launched the Ovi App Store, which was powered by Saipan and was one year older than Apple’s App Store. Despite being aware of "hardware and software" and putting it into action, Nokia has always been a very cost-conscious company, so some good ideas have been cut.

According to Sun Mei, a Nokia employee, Nokia does not attach much importance to software engineers. Nokia has not formed a strong software team. As a result, its product development is always slow and cannot be completed as planned. On the trend. Without popular software, Saipan system became dull and gradually lost its market. Although Saipan is suitable for devices with limited memory, battery, and processor power, Apple's iOS is the ideal choice for the future, because iOS takes hold of the pulse of the mobile Internet, and Saipan is confined in the mobile Internet era.