It comes from the English word modulator or modulator modem in its translation and its function is to convert data to later be processed via telephone transmission, using various types of cables between coaxial and fiber optic and via microwave, it is a way of converting a digital signal in analog this is called modulation and when it is the reverse, that is, from analog to digital it is called demodulation.
This is a technological advance which allows a wide connection and communication from one computer to another, through telephone lines. There are several types of modem are the analog types that are divided into external modem and internal modem, the external modem has its own casing and is externally connected to the computer, its ease makes it very accessible when installing it, it is portable and It is placed in what is called a USB port, it is easy to manipulate and it knows how it is working by means of the light indicators that it has in the form of bulbs to control its signal.
The Internal Modem is a card that is included inside the computer, it is an expansion card and it is there where all the elements of the modem are found, which although they are not seen is connected in three different ways or ways, the ISA Bus, the Bus PCI or AMR, because it is integrated into the computer, works when it is turned on and can only be installed by a specialist due to its complexity and its output port goes from the computer to the telephone line.
The Digital type is a modem that necessarily requires a digital telephone line, which is known by its name by its acronym ISDN, which means Integrated Services Digital Network, in order to obtain a first-class operation, its versatility makes its operation provide the possibility of having two communication inputs different from each other with the same line and this does not prevent having the best quality and connectivity, not with this lowering the resolution of the speed to establish contact.
The cable modem type is of greater access and higher speed in the internet via cable TV, it is a safe way to have a connection in a home without losing the benefits of a telephone line operator, this type has impressive versatility since it is You can have TV, internet and telephone line, going from the modem to the computer, telephone and television through an interface that has 2 types of connection: fiber optic coaxial and ADSL.
