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When we communicate, we do so by exchanging messages in a language and in a medium. The language is the content of the message - this could be English, Hindi, or any other human language. The medium is the method used to exchange messages. There are two types of communication: analog and digital. Analog communication is when signals such as waves or particles carry information from one place to another such as through phone lines or satellite transmissions; digital communication is when we use devices like computers and tablets that send information in numerical codes that represent letters and numbers (ASCII) rather than actually sending letters and numbers themselves (binary code). There are many analog and digital communication methods: Analog Communication: Sending messages through sound waves, radio waves, and electromagnetic waves; it is this method that we prefer because we can send voice, music, and other real-time signals such as weather reports or traffic updates through our phones. Digital Communication: Sending messages through digital characters or signals such as computer codes (which represent letters and numbers), text messages (shortened abbreviated words), etc. Digital communication has several advantages over analog communication including error correction capabilities and faster delivery of communications. It is also used to send non-real time information such as pictures or documents. Analog Communication is best for communications that are Digital Communication is best for communications that are Analog communication uses low-powered radio waves to transmit the message. Digital communication uses much higher power but with better accuracy. For example, in radio transmission, radio waves travel at the speed of light in vacuum, but in digital transmission, the information travels at the speed of electricity in a conductor. Analog communication is not feasible for high-speed data transmission because the signal must be amplified to be transmitted over long distances including microwave transmitting antennas. On the other hand, digital information can be directly sent through fiber optic cables at almost any speed without amplification or filtering delays. Analog and digital signals can be sent over a wire, such as an electric wire. In general, the method of sending analog signals over wires is called wireline transmission; sending digital signals is called wired digital transmission.a) https://www.scholarguide.com/book/title/analog-and-digital-communication-by-tl-singal-9780195344097 b) http://www.loc.gov/catdir/toc/ecip0814/2008000837.html c) https://books.google. co.in/books?id=XgrGAAAAQBAJ&q=wire+line+transmission&dq=-CSs&hl=en d) http://www.scribd.com/doc/156405574/Wired-Digital-Communication As a general rule, a signal is considered an analog signal if it can be considered a stream of waves or particles that carry information from one point to another. In other words, analog signals contain signals that have no inherent meaning but simply carry information from one place to another. On the other hand, digital signals are composed of binary digits that represent letters and numbers. They have an inherent meaning and carry instructions from one computer to another. cfa1e77820
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