In this article we will cover Introduction to Electronic Communication, We will also cover basic terminologies of Electronic communication and we will try to make it useful for you.
Introduction to Electronic Communication
Communication means exchanging information from one place to another, it is what Human beings do to convey their emotions, their thoughts, ideas and feelings to one another. Communication is happening from the beginning of humankind.
Most Humans communicated through the spoken words or with their gestures and postures (Nonverbal communication). Later written communication was developed.
Humans wrote letters to one another and eventually invented newspapers and books. Although the bulk of huge of information is still oral, a huge volume of information is exchanged by means of the written word.
Human communication has faced two barriers in all time; language barrier and distance barrier.
- When humans of different tribes, races, and nation come together, they often find that they do not speak the same language. This language barrier continues today. But it can be overcome as humans are learning new languages day by day.
- Communication at long distances is also another big barrier, most communication, in the beginning, it was limited to face-to-face conversation. However, for long-distance communication humans uses signals with drums, horns or smoke signals.
Other early forms of long-distance communication were lighting a signal fire, waving a flag (semaphores), but despite all these attempts of long-distance communication, transmission distance was limited.
Human communication took a huge turn in the late 19th century when electricity was discovered and its many applications were explored. The telegraph was invented and the telephone and the radio were discovered.
It was the time when an exchange of information took a great leap forward.
Important Milestone in History of Communication are Given Below:
An Electronic Communication, such as Telephone, Radio, and Television, have increased our ability to share and convey information of long-distance. Today they are the major part of our lives.
Despite these basic types of long-distance communication platforms, now we have internet, we write E-mails to communication, we have social media platforms like Google, Facebook, and Yahoo. These all types of communication platforms have not replaced the old telephone, radio or television but they have simply added a new way for people to interact with one another.
It is hard to imagine what our lives would be like without the knowledge and information that arrive from around the world by electronic communication.
Ours is an information society, and a key part of it is communication. Without electronic communications, we could not access the available information in a timely way.
The so-called information superhighway of the future is an electronic communication technology.
The Elements of an Electronic Communication System:
All electronic communication system has three basic elements, Transmitter, Medium or channel and a Receiver.
In real Human or Source generate a signal, that contains the information and that signal is sent to the transmitter which transmits the information over a communication channel. And then the message is picked by the receiver and receiver gives that information to the desired destination say human.
In this process. A noise is always added to the information through the communication channel. A noise may be due to environmental effects, temperature, or not proper working of an instrument.
The transmitter is the collection of electronic components or a circuit. Which is designed to convey the information into a suitable electrical form for communicating with the channel.
It may be a simple microphone as most radio uses.
The communication channel is the medium by which the information is sent from one place to another.
As a voice signal uses air medium for face-to-face communication. As that an electronic communication uses an electronic medium for sending information from one place to another.
For an Electronic communication, a medium may be the simple pair of wires which transmit the information signal which is taken form microphone.
On the other hand, a medium may be a wireless or Radio, Radio makes use of electromagnetic spectrum where signals are communicated from one point to another.
The receiver is also another electronic circuit, which accepts the transmitted information from the channel and converts it back into a human understandable form.
A receiver may be the Speaker or complex electronic receiver.
A Noise is random, undesirable electrical energy that enters the communication system through the communication channel and interface with transmitted Information Signal and attenuates the information signal.
Noise may be generated by the thermal radiation of electronic components, improper environmental conditions can also cause the noise signal. Although such noise signals are the very low-level signal. But they produce more serious problems in electronic communication.
For the most part it cannot be completely eliminated, however, it can be reduced on some level.
Source of information: Communication Electronics (Principal and Applications) by… Louis Frenzel
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