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What system does communication theory deal with? 2. What does the source output represent? 3. What is the channel? 4. When was the mathematical theory for communication systems developed? 5. What are the distinguishing features of this theory? 6. What is IT? 7. What does it deal with? 8. What jobs are IT experts engaged in? 9. What do you understand by “infotech”?
Communication Systems and Information Technology

Communication theory deals primarily with systems for transmitting information from one point to another. The source output represents a voice waveform, a sequence of binary digits from a magnetic tape, or target in a radar system. The channel may represent a telephone line, a high frequency radio link, a space communication link, or a storage medium.
As it is known, in the early 1940’s a mathematical theory for dealing with more fundamental aspects of communication systems was developed. The distinguishing characteristics of this theory are, first, a great emphasis on probability theory, and second, a primary concern with the encoder and decoder. This concerns their functional roles and their achieving a given level of performance. Later information theory was extended and applied in practical communication system.
Information technology is the study, design, development, implementation, support or management of computer-based information systems, particularly software applications and computer hardware. Information technology deals mainly with the use of electronic computers and computer software to convert, store, protect, transmit as well as securely retrieve information.
Today the term information technology includes many aspects of computing and technology and covers many fields. Information technology professionals perform a variety of duties that range from installing applications to designing complex computer networks and information databases. The duties of IT specialists may involve data management, networking, engineering computer hardware, database and software design, as well as the management and administration of the whole system. When computer and communication technologies are combined, the result is information technology, or “infotech”. Information technology describes any technology that helps to produce, manipulate, store, communicate and or disseminate information.

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