Symbian OS and Communication technical terminology full solution (next)

Source: Internet
Author: User

Gsm

Global System for Mobile Communications, the most widely used digital mobile phone System and the de facto wireless One standard in europe.originally defined as a Pan-european open standard for a digital cellular telephone network to Supp ORT voice, data, text messaging and Cross-border roaming. The GSM is now one of the world's main 2G digital wireless standards. GSM is present than 160 countries and according to the GSM Association, accounts for approximately-percent of T He total digital cellular wireless market. GSM is a Time division multiplex (TDM) system. Implemented on, 900, 1800 and 1900 MHz frequency bands.

Global mobile communications systems, using the widest range of digital phone systems and European de facto radiotelephone standards. A pan-European open standard originally defined as a digital cellular telephone network, used to support voice, data, text messaging, and transit roaming. GSM is now one of the major 2G digital wireless standards in the world. GSM exists in more than 160 countries, according to the GSM association, it accounts for about 70% of the digital cellular wireless market. GSM is a time division multiple access (TDM) system. It is implemented in 800, 900, 1800 and 1900MHz bands.

Irda

1.A suite of protocols for infrared (IR) exchange of data between two devices, up to 1 or 2 meters apart (in cm for Low-power devices). IrDA devices typically have throughput of up to either 115.2 Kbps or 4 Mbps.irda protocols are implemented in Symbian OS p Hones, many PDAs, printers and laptop computers.

2.The Infrared Data Association, the industry body is specifies IrDA protocols, originally founded by Hewlett-Packard D others.

"1. A set of infrared (IR) protocols used to exchange data between two devices that reach a distance of 1 or 2 meters (for Low-power devices 20 to 30 centimeters). IrDA devices typically have throughput rates of up to 115.2Kbps or 4Mbps. The IrDA protocol is implemented by Symbian operating system handsets, many PDAs, printers, and laptops.

2. IR Data Alliance, the industry institution used to designate the IrDA protocol, was originally founded by Hewlett-Packard and other companies. "

Java

Industry standard object-oriented language and virtual machine, invented by Sun Microsystems and formally released in 1996 . Java is a ideal language for network applications and applets. Sun ' s Java specifications include many Java APIs and platforms, including the Javaphone API and Personaljava platform, WHI CH are included in Symbian OS.

"The industry standard object-oriented language and virtual machine, invented by Sunmicrosystems, was released in 1996." Java is the ideal language for Web applications and applets. The Sun's Java specification includes many Java APIs and platforms that contain the Javaphone APIs and Personaljava platforms included in the Symbian operating system. "

J2me

Java 2 Platform, Micro Edition (J2ME): The Edition of the Java Platform that is targeted at small, standalone or connectab Le Consumer and embedded devices. The J2ME technology consists of a virtual machine and a set of APIs suitable for tailored runtime environments for these D Evices. The J2ME technology has two primary kinds of components–configurations and profiles.

Java 2 Platform, Micro Edition (J2ME): This version of the Java platform is designed for small, independent or connected consumers and embedded devices. The J2ME technology consists of a virtual machine and a set of APIs that apply to the runtime environment that is customized for these devices. J2ME technology has two main types of components: Configuration and configuration files.

Javaphone

A Java API specification controlling contacts, power management, call control, and phonebook management, intended specific Ally for the programmability requirements of mobile phones.

A Java API specification for controlling contacts, power management, call control, and phone book management, designed to meet the programmability requirements of mobile phones.

Kernel

Core of an operating system, a kernel manages the machine's hardware resources (including the processor and the memory), a ND provides and controls the way any other software component can access. The kernel runs with a higher privilege than other programs (so-called User-mode). The power and robustness of a OS's kernel play a major role in shaping overall system design and reliability.

Open specification for wireless communication between mobile devices and fixed devices for short distances between data and speech. For example, it specifies how the phone, computer, and PDA are interconnected, and how to interconnect with a computer, office phone, or home phone. The first generation of Bluetooth allows data to be exchanged at the highest 1mbps/s rate, even in areas where electromagnetic interference is more severe. It uses a globally available band (2.4 GHz ISM Band) to transmit and receive data via short-range wireless links.

OS

Operating system:historically, the minimal set of software needed to manage a device ' s hardware capability and share it b Etween application programs. Practically, "OS" is now used to mean all software including kernel, device drivers, comms, graphics, data management, GUI Framework, System shell application, and utility applications. This would define Windows, Palm OS and MacOS as operating systems. Symbian provides an operating System–symbian os–tailored for data-enabled mobile phones.

Operating system: Historically, it refers to the minimum set of software required to manage device capabilities and share that capability among applications. In fact, "OS" is currently used to represent all software, including kernels, device drivers, communications, graphics, data management, GUI frameworks, system shell applications, and utilities. This defines windows, Palm OS, and MacOS as operating systems. Symbian provides an operating system Symbian operating system that is customized for mobile phones that allow data to be used.

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