Generation of Mobile Phones

Generation of Mobile Phones : Mobile radio telephone systems preceded modern cellular mobile telephoney technology. Since, they were the predecessors of the first generation of cellular telephones. These systems are sometime retroactively refeerred as pre-cellular systems : General Packet Radio Service (GPRS) - It is a packet oriented mobile data service on the 2G and 3G cellular communication system for mobile communication. It is now Read More

Full Form Of Some technical Words

Full Form Of Some technical Words VIRUS - Vital Information Resource UnderSeized. 3G -3rd Generation. GSM - Global System for Mobile Communication. CDMA - Code Divison Multiple Access. UMTS - Universal MobileTelecommunication System. .SIM - Subscriber Identity Module . AVI = Audio Video Interleave RTS = Real Time Streaming SIS = Symbian OS Installer File AMR = Adaptive Multi-Rate Codec JAD = Java Read More

Mobile Operating Systems

MOBILE OPERATING SYSTEMS It is the operating system that controls a mobile device similar in principle to an operating system such as linux or window that controls a desktop computer or laptop. The most common mobile operating system used by modern smart phone includes Apples iOS, Google's Android, Microsoft Window Phone, Nokia's Symbian ANDROID : It is a linux based operating system for mobile devices such as smart phones Read More

Channel Access Methods

CHANNEL ACCESS METHODS : Channel access method in telecommunication and computer works allow the several terminals connected to the same multi point transmission medium to transmit singals over it and to share its capacity. Fundamental types of channel access schemers are described below : 1) FREQUENCY DIVISION MULTIPLE ACCESS (FDMA) It is based on the frequency division multiplexing (FDM) scheme which provides different frequency Read More

Transducers Fundamental

TRANSDUCER ------- A device which converts one form of energy to another form of energy is called transducer.  In Electrical instrumentation it is defined as a device which converts a physical quantity into an electrical signal.  For eg an electric heater and loudspeaker. Electric heater converts electrical energy to heat energy while loudspeaker converts electrical energy into sound energy.    PRIMARY A Read More

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