cell phone jammer is an important item in the list

  Operating system to provide unified management of the task scheduling, interrupt service, timer management, and message queue management and file system management. 5) application layer software application layer software is the top-level module of the mobile phone software, but also interact with the user module. Display and provide various functions to the user through the keyboard, LCD, audio and other peripherals to meet user demand for mobile phones. What is the chip set of mobile terminals, which are the major chip set manufacturers have?  cell phone jammer can be applied to the American market. A: The phone's core chips are usually called the platform chip industry referred to as the chip set. The mobile phone chip set usually includes three types of chips, First, the RF transceiver (multi-mode terminal, you need a multi-chip transceiver chip), the second is the baseband chip and the third is the power management chip. These three types of chip, RF transceiver is one of the most important set of chips. Now, it uses the technology to move closer to the RF CMOS technology. Using this technique, the RF transceiver for multi-mode mobile phone is probably only need a 2-4 chip can. The baseband chip is currently under development to multi-core, a base with a chip may have two DSP, the ARM core. A DSP for communications, another DSP for the application. An ARM for communication protocols and man-machine interface, and the other ARM for the operating system.  cell phone jammers is an important item in the list. The power management chip provides the phone's overall power management features, power management requirement is to provide high current in the voltage output, along with low power loss, small size, low electromagnetic interference characteristics. Shutdown immediately cut off the load current. 3G terminal chip set research and development of the overall technical content is high, the current Nokia and Texas Instruments to develop WCDMA mobile phone chip set, Sony Ericsson's WCDMA Ericsson EMP chip set. At present, the main supplier of terminal chip set with Texas Instruments, Infineon, Ericsson, the EMP, Qualcomm, Agere, Fujitsu OF THE, Philips, Lucent Technologies, Renesas, Eonex, Icera is, as Broadcom, Motorola and China Taiwan's VIA and so on. Terminal OS, definition and classification of A: Terminal OS system software responsible for the direct control and management of the terminal hardware.  cell phone jammer is a kind of useful tool for the meeting. Terminal OS, features typically include processor management, memory management, file management, device management and task management. When multiple programs running at the same time, the terminal OS is responsible for task scheduling. A terminal OS is conceptually divided into two parts: core and shell, the kernel provides the core functionality of the IO processing, hardware drivers, and process scheduling, while the shell is generally used to provide for the upper layer user. Terminal OS level: hardware <-> kernel <-> shell <-> Applications. Core and shell completely separate in some operating systems (such as Symbian, Linux, Rex, etc.) can be equipped with the same kernel with different shell. Close some of the core and shell relations (such as Windows Mobile) indivisible. The mobile terminal OS are mainly two categories: RTOS, the Open OS. Applications, the terminal of the Open OS terminal and non-Open OS qualitative differences, the Open OS open, easy to third-party software development. If you don’t want to be interrupted during the meeting,  cell phone jammer will be a good choice. Open OS smartphone non-real-time OS, its the bottom there is an RTOS. WinCE is based embedded operating system with RTOS functions. Non-smart phone OS is an RTOS. Terminal RTOS What are the main? A: an RTOS ATI's NUCLEUS + of ENEA of the OSE, Qualcomm REX and as VxWorks, pSOS, etc.