Etymologically, the term unit comes from the Latin “Unitas”, it is defined as everything that is presented in a homogeneous, compact way, something that does not allow division since it would mean the deformation of its essence.

The unit can present different meanings, and it will depend on the context in which this term is applied. In the world of mathematics, the unit is symbolized by the number one (1), which represents the first natural number and from which the other natural numbers are derived or constituted. In the military context, unit refers to the different groups that together form the component of a country’s armed forces. Each military unit is made up of a number of people who are part of its human resources, as well as materials that give it meaning and importance and are what truly enable its functionality.

Socially speaking, the unit can represent two aspects: one positive and one negative, the unit can be presented as positive, when it reflects the mutual and orderly work between people to achieve objectives, for example in a community, when each of the people who live in it work together to obtain benefits that improve their quality of life. The community or social unity comes to be linked with the purpose of uniting among all, putting aside differences to achieve a common goal. Although, the unit can also be negative, if it is thought that what is different is bad and dangerous, and that therefore it must be removed or eliminated.

In the field of computing, the unit is presented as the instrument or device that performs the reading and writing procedure of the media or storage base designed in the form of a disk, referring to hard disk drives, disk drives optical media such as CDs, DVDs. In the scientific aspect, the unit is designated as a unit of measurement, for example: the kilogram of mass, the meter of length and the second of time.