SOME CRAZY FEELINGSS!!

                               Exams, as always, interrupts the normal daily routine of my life. Whether it may be a simple or a serious one, it makes some irritation to my mind, annoys my daily activities and ends up in a totally unpleasant feeling. And at the end of exams, what to say, it feels like I’m going to fly off the sky or gonna just freak out the day or some crazy feelings like that. But as usual, nothing changes, and everything turns back to the usual days as before. Anyways, feelings of immense joy and peace remains immediately after the exam days are over. It makes me feel happy more than before. I’m in this crazy feeling right now…!! :) 

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APPLICATIONS-NETWORK SIMULATION

                                                        Network Simulation can be better applied in the fields of communication and computer network research. In these fields, many new advanced techniques are developed day by day. All these new ideas and concepts are tested on network simulators as different experiments by the experts before implementing them actually.     

                                        In case of graphical applications, the individual network components, represented as nodes can be used for creating visual effects based upon the output and we can watch them and analyze in case of certain experiments. Apart from graphical applications, it can also be used for text-based or circuit-based applications too. In all these the output forms will be different but can be saved for analysis purposes.

                                         It is a most amazing fact that a software program can entirely represent the behavior of a computer network and its performance under various environments. This is undoubtedly, a great boon to the technicians/experts working in the fields of research, and provides them an opportunity for testing, controlling and analyzing their experiments in simulator software without even setting up the testing arrangement. So, I think this concept of network simulation is a great technological advancement in the fields of research and study. 

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DESCRIPTION-NETWORK SIMULATION

                                 Network Simulation is typically a software program that can completely represent the behavior of an entire computer network virtually. In this, each component is represented as nodes. These nodes can be used for representing any element like computers, routers, hubs, links, etc… Then, if we need to test a new protocol in a computer network or need to modify the existing ones, we only need to implement the same in this virtual environment and watch out the results. Here, we can make modifications instantly in a controlled manner and can make any varieties of changes we need to implement and observations can be made upon the behavior of each individual node.

                                    Any type of networks ranging from simple to complex can be represented in this way with the help of small network components denoted as individual nodes. This makes the analysis simpler and the network can be treated as individual segments. In a simulator representation, we need to include network topology type, each individual node, its position, the links between them and we also need to illustrate how the traffic takes place between the nodes.

                                       The results of network simulation are often called as trace files. This can be better used for analysis and helps in arriving at conclusions by the close examination of this output files. Trace files can also be saved for future purposes.

                                       One of the advantages of using network simulators is that, manual labor can be reduced much since the practical implementation of the real time computer network for the purpose of testing is eliminated. We can perform the simulation with the help of a technician/programmer or with the help of a small group of experts, in a single system itself!!

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NETWORK SIMULATION

                    Network Simulation is, actually the concept of implementing a network without actually setting it up. It is about producing an entire virtual environment for a specified network and its functioning. It can be implemented as a part of experimenting purposes in various types of networks like TCP, ATM, IP, LAN etc..

                              In a simple way, let us illustrate an example of network simulation. In a simple LAN (Local Area Network), if we need to implement a small alteration, say we need to experiment a totally new application. It is understood that we need to know whether it functions well in all the components associated with that network. We think it is impossible to know how each system reacts to the new application before actually implementing it. We also know that it is quite difficult to implement that change in all the systems in connected to that Local Area Network before it has been proved successful. Here comes the significance of network simulation. We can use network simulation software such as ns2/ns3, Netsim, Glomossim so that we can virtually set up that network and test the alteration we need to implement and watch out for its consequences. This provides an opportunity for the developers to make decisions upon the experiment results without even actually setting up the system.

                                  In practice, this system of virtual network implementation has got numerous benefits. In many real life situations, the network implementation would be difficult to implement and rather expensive. In such situations, a network simulator has a big role. Implementation cost is reduced much in such cases. Being inexpensive, users/developers can test various changes, observe its outcomes, analyze them and arrive at better conclusions. There are many open source and commercial network simulators available today that serves these purposes. And this accounts for time saving too. That means the longer time that may be taken for the real life network implementation for testing is eliminated. This results in a faster simulation and its analysis, and is a better option for programmers. Also the power consumed in implementing in all components of a system in reality in case of testing can be saved much since simulation is set up virtually in a single system.  

                                                                                                           

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MA WORKSHOP EXPERIENCE

Raspberry Pi-hardware

                                                   Attended a workshop on Raspberry Pi, ma first such experience. Being an electronics student, I could explore much about this amazing invention. The class was conducted by ieee sb of my college and the class was took by Nikhil sir. He is a very friendly man, and he explained everything in a simple way. It was interesting, in the sense that it was a totally strange concept for me and knowing something about this was something great. 
                                             He introduced us the hardware component, which was as small as a credit card and it can be well defined as a single board computer because it can perform almost all tasks that a computer can do and much more. Its more common operation platform is the open source software, Linux. Its specifications comes as follows: It consists of an ARM processor, ARM1176JZF-S as its CPU, Graphics supported by Broadcom Videocore 1V functioning as its GPU , has an SD card slot for its storage, has 2 USB ports, a video input, video output, audio output, an ethernet port for net connection, a power source (can be a MicroUSB or even a samsung charger will do) , an HDMI port for display purposes. And the most amazing fact is that all these components are embedded in  the small  board having a size specification of 85.6 mm*53.98 mm. 

The External Connections

                                          The main programming tool for Raspberry Pi is Python, however it can also go well with C programming too. The class discussed about model programming in Linux. Sir informed us that Raspberry pi can perform well in several situations in our day today life. At first, it was quite unbelievable. Then, we were allowed to close examine the small hardware. 
                                           He asked us to tell any real life necessity that can be implemented through Raspberry pi and then he explained how it can be implemented through Raspberry Pi, and how it works. Then, at last, he showed us its working by a implementing a simple function of glowing an LED whenever it detects a "1" and goes off when it detects a "0". This concept can be expanded to any higher levels of ideas and can be implemented and worked out. Totally, the class was informative and to a great extent, interesting too.

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SOME MORE SUPPORTING FACTS

                                 Even though 21st century witnessed many revolutionary changes in many areas like telecommunication, broadcasting, space research, medicine, etc.. I feel the most glorified impact is made in the communication field itself. I think it forms the basis of all the above mentioned developments. 
                                  The faster and convenient methods of contacting people all over the world within a fraction of a second, has improvised the chances of communication with experts living in any part of the world. This is a mandatory factor in the development of any field. The technicians, doctors, or any people associated in any field are able to get themselves accessed to the latest news happening around them always. This provides them opportunity to update in their respective fields of profession and fill in it with whatever new and trend. 
                                   The amazing new world of social networking communities is accessible to everyone, in any age groups, and they are able to build new relations or find their old contacts through this communities. People gets connected to everyone they wish to communicate with, in a very short span of time. 
                                    To discuss the impact of communication in the field of education is almost impossible to express in a few words. The new feature of smart classrooms even in rural areas, providing internet connectivity campuses with WiFi facilities, the satellite broadcast of expert classes using INSAT and other education purpose satellites, and there are lot more. Online tutorials provides us chance for E-learning. Clarification of doubts in any subject is most simpler today with the availability and easy reach of internet and its at a distance of a single click to search on Google for any student. And one can undoubtedly say that all this was made because of the revolutionary changes occured in the field of communication. 
                                    There are a lot more to say about the communication revolution that has been  occuring in the present century. However, we can identify its impact by just analyzing our present day life, with all its new communication techniques incorporated within. And of course, Let us wait for more and more exciting and interesting new inventions in this field that could help to communicate with people all over the world more effectively with more convenience and less time. 
  

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THE ASSOCIATED REVOLUTIONS IN THE COMMUNICATION FIELD

                                               The revolution took place in the field of communication would be incomplete if I didn't mention the impact of the evolution of processors. We know, the very first computer occupied a whole room!! From there, to the nano-sized processors was really a fabulous changeover. The gradual transition from the conventional bulky computers, to the desktop computers that used vacuum tube transistors, was made in the previous century. 
                                From the beginning of 21st century, we could see the amazing changeover of personal computers to notebook computers, laptops, and tablet computers. However, all these took some more time to become popular among the common people. And now, we could see brand new smart phones that could perform the very similar functions of tablets, laptops, etc..All these was made possible because of the invention of IC's. The vacuum tube transistor was replaced by integrated circuits, ranging over various size requirements from the small scale integration (SSI) to very large scale integration (VLSI) to more and more levels. Thus the bulk processors are replaced by simple, small IC chips and the size of the processors became amazingly small.
                             So,  the modern communication era started through  internet which was possible only by using PC's became old memories. Now we could access to internet or any of its applications by a single touch, no matter anywhere we are. Thus, a person, whether he is at a market or at his workstation or at his home or even at any of the clubs, play stations, etc .. he could better get accessed to internet through his smart gadgets and get himself know about the latest news or stay updated in his social networking communities etc.. This exposure of information or entertainment or whatever it may be, at any place, by any person was made possible because of the existing brand new gadgets using nano-sized processors.

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TECHNOLOGICAL REVOLUTIONS OF 21ST CENTURY

                                21st century has witnessed many technological revolutions in various fields. Listing out all of them for the sake of analysis or comparison would be a hazardous task. And here comes the topic for my first official post, the technological revolutions witnessed by 21st century.
                                In my view, the most effective revolution was made in the field of communication, obviously. From the radical change in communication field by late 90's, we could see a rapid changeover occured by the starting of 21st century.
                                The bulky-sized communication equipments such as wireless transmitter, conventional telephones, walky-talky's all gave way to a single equipment, "cellular phones" which is trendisized day by day.The official declaration of stopping the "telegram communication" recently alone proves the real decline of conventional communication methods.
                                Today, we are able to connect to the people across the world within a fraction of a second. It is mainly because of the most popular device "mobile phones", as well as because of the establishment of the concept of "global village" which was achieved through another revolutionized , wonderful feature, "the internet" , and due to its vast applications. 
                                The connectivity is in its most simpler way today because of many features, the so called social networking communities like Facebook, Google plus, twitter, whatsapp and so on. And all these exciting and striking features has converted the present world, into a virtually smaller one. So, I feel this is one of the most influencing technological revolution that occured in this century. Let us wait for more and more interesting and amazing new features in the field of communication in the present century.

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STARTING STEP

                            Stepping into the broad new world of blogs is entirely making me feel proud and a bit embarassed!!! embarassed in the sense that this is a total strange world for me....eventhough I felt like creating one for me many times before.. think this is the right time...soo here we goo.... 

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