AnalogicalIt analogical is that based on the analogy: a link of similarity between different elements. This adjective, derived from the Greek word analogikós, is often used to refer to a type of system or device.

The analog devicesIn this framework, they present information through a continuous physical magnitude What is it proportional to the value of the information itself. In general, the analog is opposed to the digital, which works with information created, stored or transported with a combination of bits (a unit of measurement linked to the amount of information, which is equivalent to the choice between two alternatives with the same degree of probability).

The electronic analogue, for example, refers to systems with variables that change continuously in time and that, according to the theory, are in a position to adopt infinite values. In the digital electronicOn the contrary, the variables have an always defined state and can only acquire discrete values.

A analog signalMeanwhile, it occurs with an electromagnetic phenomenon that can be represented by a continuous mathematical function. The digital signal, on the other hand, it is associated to quantities with discrete values ​​(and not values that appear within a certain range).

Let’s look at the case of cameras. The analog cameras use film or reels (reels), whereas digital cameras they turn to a memory card.

A analog clockFinally, mark the time with needles or hands on a circle with numbers. The digital clocksIn general, they do their job by directly displaying the numbers.

AnalogicalIt is important not to confuse this term with analogous, something that happens often in everyday speech. The first meaning presented by the dictionary of the Royal Spanish Academy defines it as something that has an analogy with another, that is, it is similar to it. It can also be a reasoning which is based on the similarity that is appreciated in the attributes of different things or individuals. On the other hand, in the field of biology it is used to speak of a minimum of two organs whose aspects are similar because they fulfill the same function although they are not considered homologous, as occurs with the wings in insects and birds.

It is known by the name of analog blackout at the end of the analog broadcasts of TV that took place when digital television arrived. On the European continent, for example, this process took place since May 2005, although each country adopted it at different times. Once the analog transmission ceases, it becomes necessary to buy a new antenna and a digital decoder for the television. Given that this phenomenon entailed extraordinary financial expenses, many people were unhappy, although they had no choice but to adapt.

The term analog is of great importance in the field of video game, where it is used to describe button technology and sticks (small levers that move using the thumbs). One of the pioneering companies in the use of analog pressure was Nintendo, when you launched your console Nintendo 64 in 1996, the first to use a analog stick, which detected different degrees of inclination to allow, for example, a character to go from walking very slowly to running without having to touch any other button on the controller.

Later the analog buttons on the top of the controls, which are often used to simulate the different degrees of pressure of the pedals of the cars, in racing games. Unlike a digital button, which only supports “idle” or “pressed” states, the analog button can represent several hundred degrees of pressure.