History of digitization

Digitization is born from the replacement of analog.

What is the difference between a digital signal and an analog signal?

An analog signal is a continuous signal that can take any value.

The digital signal is a discontinuous signal, made of 1 and 0.

Thus, as shown in this diagram by Mathilde Glénat and Delphine Chareyron of the École Normale Supérieure de Lyon :

The principle is as follows: letters, numbers, images or sounds are transformed into electrical impulses, themselves translatable into the form of 0 and 1. This digitization is therefore binary.

Some stages of this digitization:

1966: Arpanet is launched (first packet transfer network by the Department of Defense in the United States)

1970’s: digitization applied to telephony

1980’s: digitization of sounds, music and images

1980’s : diffusion of the personal computer

1983 : official birth of the Internet

1990’s : digital convergence of computer science, telecommunications, and audiovisual.

around 1995 : digital radiotelephone

around 1996 : digital networks

General Knowledge: the Digital