The coding is he act and result of encoding. This verb, for its part, can refer to modifying the expression of a message or registering something through the rules of a code. It can also refer to the formation of a body of laws that is constituted as a system.
To understand what encoding is, therefore, it must first be clear what a code is. It is a combination of signs (numbers, letters, etc.) that has a certain value in the framework of a system or that makes it possible to reformulate and understand a secret message. The codes are also compilations of laws.
The character encodingIn this framework, it consists of transforming a character from the alphabet or from another natural language (such as a syllabary) into a symbol belonging to another representation system. Through encoding rules, for example, Morse code allows intermittent telegraph signals to be converted into letters and numbers.
The character encoding set known as ASCII, which is usually pronounced as “asqui”, can encode a maximum of 128 symbols. This limit is due to the fact that it has seven binary digits destined to the combination of values for character definition, since the latter is used for transmission error detection.
These 128 possibilities are enough to include the entire English alphabet with its upper and lower case letters, as well as punctuation marks, numbers and certain control characters (such as the one that tells the printer to start working with the page following). Having said that, ASCII cannot meet the needs of our languageas it does not include accented characters or leading question marks and exclamation marks, among other symbols that we need in various contexts.
New systems to overcome limitations
These limitations gave rise to the definition of other character encoding systems, among which is the Extended ASCII, also 8 bits. Despite this, they do not have enough space for the inclusion of all the alphabets in the world, but they also require division into several, which are used according to the needs of each user.
To solve this problem of capacity of character encoding systems, in 1991 the use of the standard called Unicode, a table of considerable dimensions, which today has more than fifty thousand symbols, each with its own code, to cover a large number of ways to writing, including the ideograms used in Chinese, Korean and Japanese, in addition to the characters of all the languages of the European continent.
Encoding and transmission
It is known as transmission standard to the definition of the way in which the encoded characters are transmitted through a communication channel, such as the Internet. Today, messages are sent in packets of an integer number of octets; error detection is not performed with the eighth digit, but specific octets are allocated for this task.
An encoding involves the conversion of data systems, making the data data resulting are equivalent to the originals. In the case of digital encoding, consists of translating electrical voltage values to the binary system: thus the analog signal is written as zeros and ones.
The concept in law
On the ground of right, the encodings are legal compilations that are used to administer justice.
A civil Code and a penal Code they are the result of a coding process. These codes order and systematize the norms and classify crimes, eliminating legal loopholes and redundancies.