The electronic instrument that is used to make telephonic calls anywhere across the world is called a mobile phone which can also be called as  a cell phone, cellular telephone or simply mobile. Mobile phones are technically advanced than the cordless telephones because the latter can be used only within a boundary that is an office or home. A mobile phone offers so many features that it is possible to make calls or receive calls using a mobile phone to any other network of phones which can be a public telephone or any other mobile service throughout the world. This is made possible by getting connected to a cellular network which is owned by a mobile network. Irrespective of making so many calls the mobile phone also provides additional facilities such as e-mail, games, Bluetooth, text messages used to send and receive messages, internet access, MMS messages, infrared wireless communication within a limited range, camera, radio, GPS and MP3. Mobile phones are referred by their features as feature phones that are low-end mobiles and smart phones that are high-end mobile phones which has advanced computer facilities. In 1973, Martin Cooper of Motorola demonstrated about the first handheld mobile which weighed 2kgs.  A rapid change has occurred from 1990 to 2010 that there are increased subscriptions for mobile phones worldwide.

Computer science is the science which deals with the study of information and computation in a computer system. Researchers and scientist in the field of computer invented algorithmic process which is used to create, describe and transform the information and tends to formulate abstraction into model complex systems. As there is a vast growth in science and technology all fields are evolving with the help of computers. All kind of complex substances is made simpler by using the computer. Computer science is divided into many fields computational complexity theory, programming language theory, computer programming and human-computer interaction. The study of computational problems such as computer graphics emphasizes computation of specific results known computational complexity theory. The programming language theory involves in study of computer programming language for performing a task or operation. The human-computer interaction focuses on the making use of computers and computation which are globally accessible to all humans. Computer science also deals with understanding the properties of programs which are used to implement or create software’s such as web browsers, games and so on. They are also used for creating new programs and also to improve existing ones. Thus, computer science makes its role perfect in satisfying all kinds of users.

Discovery of technology involve in invention of newer products into the market for satisfying the needs and requirements of the people. Due to discover of technology all kinds of people work are made much simpler. People in all over the countries would be somewhat using the technological products for completing their work perfectly without any kind of risks. Day to day the needs and requirements of the people are seems to be increasing rapidly. The scientist and researchers involve in the activity of manufacturing and updating the technological products frequently. Technological products places it foot in all kinds of field. Most of the people would be very much interested to buy entertain able technological products. Several gadget products are available in the market each of the products would be loved by most of the people due to its effective performance and quality. The cost of the technological products would be depending upon the type of selection of material. Now a day’s people can also purchase technological products through online without going to any type of departmental stores. All these kinds of methods or techniques are possible only by the source of discovery of newer technological inventions into the globe. Annually newer technological discoveries are released into the market for serving the people.

Mobiles are used for communication purposes through mobile phones people can able to pass the information from one person to other person continuously.Mobileis also known s one of the technological product which is mainly designed for communicating personally. As the mobile phones are very compact in size it can be easily carried to the place wherever they are engaged. In earlier days, people used birds for communication which may took several periods of time to receive a message after than human are used for passing the message by postal service. At present as there is a vast growth in technology people can contact the individual at anytime from anywhere by using mobile phones.  Purchasing a mobile alone would not allow the people to communicate with others. People should request one of the network services providers for the purpose of making and receiving calls.  Now a day’s all mobile are manufactured with the implementation of advanced technology such that people can able to browse internet, send message, make video calls and so on features are available in the mobile phone. In the market several mobiles are available all kinds of people can own mobile at an affordable price of cost.

The purpose of developing MP3 is to reduce the quantity of data needed to represent the audio recording but still sound like original track to most of the listeners. An MP3 file can also be created at higher bit rates as well as lower bit rates, resulting to higher quality or lower quality correspondingly. The compression method is done by reducing certain accurate areas of sound which are less audible to human ears and hence they are discarded and the recording is done with the remaining data in a professional and efficient way. However there are certain limits which are inherent to the MP3 format which is not possible to overcome by an MP3 encoder. For high transient signals the time resolution is relatively low and this can make the percussion sounds to smear. Another limitation is that the frequency resolution is minimized by the block size of the window which can decrease the efficiency of the codes. Joint stereo is possible on a frame to frame basis only and there is a delay in encoding due to the internal handling of the reservoir bit. And finally the overall delay in encoding or decoding is not defined and data that contain optional check sum protects only the header data and not necessarily the audio data.

Tablet PCsare specialized laptops with wireless option and touch screen user interface. The user input is mainly through the touch panel via stylus or digital pen. Virtual keyboards and hand writing recognition may also be accompanying features of Tablet PCs. Due to the presence of wireless features, they provide seem less internet connectivity and office tasks. Typical tablet form factor are bigger than touch screen smart phones. However, today all handheld touch enabled devices are considered as tablets. Early, windows was the only operating system used with these PCs because it provides easy pint and click operation. Now, Linux also used in tablets. Additionally there are a multitude of operating systems, either based on Windows or Linux or proprietary, designed only for tablets such as Pocket PC, Android, Maemo Linux, Symbian OS 9, Apple Mac OS X, etc. Software applications on these platforms are completely re-programmed to support touch input. Tablets may also have a separate keyboard, detachable or rotatable. Some laptops allow users to detach the screen and use as tablets. A rugged tablet is one which can be used even on harsh conditions.  Tablet PCs are mostly preferred mainly for graphic intensive work where the precise movement of hand is required.