What Is Encoding And Decoding

What Is Encoding And Decoding

Encoding and decoding are utilized in many forms of communications, including computing, data communications, programming, digital electronics and human communications. These two processes contain changing the format of content for optimum transmission or storage.

In computers, encoding is the process of placing a sequence of characters (letters, numbers, punctuation, and certain symbols) right into a specialised format for efficient transmission or storage. Decoding is the opposite process -- the conversion of an encoded format back into the unique sequence of characters.

These phrases should not be confused with encryption and decryption, which focus on hiding and securing data. (We will encrypt data without changing the code or encode data without deliberately concealing the content.)

What is encoding and decoding in data communications?
Encoding and decoding processes for data communications have interesting origins. For example, Morse code emerged in 1838 when Samuel Morse created standardized sequences of two signal durations, called dots and dashes, to be used with the telegraph. Today's amateur radio operators still use Q-signals, which developed from codes the British Postmaster Common created in the early 1900s to ease communication among British ships and coast stations.

Internet access relies on encoding. A Uniform Resource Locator (URL), the address of a webpage, can only be sent over the internet utilizing the American Standard Code for Info Interchange (ASCII), which is the code used for textual content files in computing.

In an ASCII file, a 7-bit binary number represents each character, which will be uppercase or decreasecase letters, numbers, punctuation marks and other frequent symbols. Nevertheless, URLs cannot include spaces and infrequently have characters that are not within the ASCII character set. URL encoding, additionally called percent encoding, addresses this by the conversion of spaces -- to a + sign or with %20 -- and non-ASCII characters into a legitimate ASCII format.

Some ways encoding and decoding are utilized in varied programming languages embrace the following.

In Java
Encoding and decoding in Java is a method of representing data in a special format to efficiently switch info via a network or the web. The encoder converts data right into a web representation. Once acquired, the decoder converts the web representation data into its original format.

In Python
In the Python programming language, encoding represents a Unicode string as a string of bytes. This commonly occurs while you switch an instance over a network or save it to a disk file. Decoding transforms a string of bytes into a Unicode string. This happens whenever you obtain a string of bytes from a disk file or the network.

In Swift
In the Apple Swift programming language, encoding and decoding models typically symbolize a serialization of object data from a JavaScript Object Notation string format. In this case, encoding represents serialization, while decoding signifies deserialization. Everytime you serialize data, you convert it into an simply transportable format. Once transported, it converts back into its original format. This approach standardizes the protocol and enables interoperability between totally different programming languages and platforms.

What's encoding and decoding in digital electronics?
In electronics, the terms encoding and decoding reference analog-to-digital conversion and digital-to-analog conversion. These phrases can apply to any form of data, including text, images, audio, video, multimedia and software, and to signals in sensors, telemetry and management systems.

What's encoding and decoding in human communication?
People do not think about it as an encoding or decoding process, but human communication begins when a sender formulates (encodes) a message. They select the message they will convey and a communication channel. People do this each day with little thought to the encoding process.

The receiver must make sense of (decode) the message by deducing the which means of words and phrases to interpret the message correctly. They then can provide feedback to the sender.

Each the sender and receiver in any communication process must deal with noise that can get within the way of the communication process. Noise entails the assorted ways that messages get disrupted, distorted or delayed. These can include actual physiological noise, technical problems or semantic, psychological and cultural issues that get in the way of communication.

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