Communications Era Modern (Mirabito, MAM, & Morgenstern, chapter 2)

Communication technology continues to evolve to create a phenomenon called the communication revolution. This communications revolution also helped shape the changes in the environment and communications industries. Although some changes actually more accurately described evolution as the use of more appropriate if the technology revolution that is present completely new. This is due to some changes are the result of technological improvements previously.

Changes create an understanding of one particular concept more widely. Understanding the concept of communication systems are no longer limited to exchanges of information in the signal-coding. Understanding of communication systems are now included in the means of communication used and the applications and implications of such tools on the production, manipulation and potential exchange of information itself.

Information can be interpreted as a set of symbols that when combined can deliver messages or news. In this information communication system can be transformed into electronic signals are then sent over telephone networks, satellite or other media. Furthermore, the signals are converted back to the early form that can be understood by the recipient of the message.

Not limited to delivery, the existing communications system has also allowed the addition or reduction of the content of information through application-specific applications. Therefore, today called the information is no longer limited to television programs, dala telephone conversation, or data stored on CD. Information also includes image manipulation by computer so it can display the human body in detail and data in the virtual world that can be accessed via the internet. Information system that has evolved in such a way that in many areas have been able to replace humans. So that people are now starting to “set” and hung by the existing information.

But on the other side of the development of such sophisticated information systems also bring negative impacts caused by the misuse of knowledge or limitations in accessing knowledge of this information system. For example, the scanner should be used to facilitate data entry can be used to copy graphics and hijack the work of others. Some people who do not have the skills to feel more also experience fear have lost their livelihoods because of the possibility replaced by machines that lower production costs and be profitable for business owners. People with minimal skills and knowledge will also be difficult to get a job because today almost all areas of work involving computer-based systems.

Besides the tools that are considered advanced today turned out to be harmful to humans, this is probably caused by very high electromagnetic waves released by the tools of information systems support around humans. Technology enables the convergence of ordinary people to act not just as consuming media content, but also can act as a producer and editor. This continued on intellectual property, works of ordinary people, who do not quite understand the importance of copyright contained in the media like the Internet, can be stolen and are considered proprietary by anyone. Extensive network of cyber theft of intellectual property can sometimes make it rather difficult to trace.

Freedom of access to this information raises another implication that is the subject of privacy. If everything is accessible to eat a person’s privacy can be easily infiltrated by parties who are not interested. But if freedom of access to information is restricted Another problem that arises is about the right to obtain information. In addition to those already mentioned there are many other implications as in the economic debate concerning the seizure frequency or whether there are technologies that reduce the ability of human creation or just add power these creations.

In modern communication systems there are several elements to note include the transducer, signal characteristics, modulation, bandwidth, noise, and electromagnetic spectrum. Transducer can be interpreted as a device that can convert energy from one form to another. For instance when someone uses a microphone, the transducer convert sound into electrical energy which later converted back into sound. Transducer acts like an intermediary between communications systems and the natural world. In addition transducer is also such an extension of the human senses, such as cameras and sense of vision. Determined by the amplitude of the signal characteristics, ie wave height and frequency can be interpreted as the number of waves passing through a point in one second. The unit of frequency is hertz, so it can be said a hundred hertz means there are a hundred waves that pass through a single point in one second. Modulation can be interpreted as a process by which information is superimposed on a carrier wave for transmission. While bandwidth can be defined as the capacity of a network in regulating the flow of information in and out. When the process of sending a message that interference would occur is also called noise. This noise can originate from the communication device itself or from outside, like the weather. Electromagnetic spectrum is the entire set of frequencies of electromagnetic radiation, from radio waves to cosmic waves.

Communication systems today can be said almost everything is digital. The advantage with an all-digital communication system include ease of change, add, subtract and manipulate the data. Besides sending the data will be more complete, concise and brief so the cost will be more effective. But the shortcomings of this system, among others, demand for the information channel would be very much, still large possibility of error-irritation caused by technology is not perfect, it takes a very large cost to convert all existing devices to digital devices.