What is a modem?
We explain what a modem is in simple and easy language. The modem is made from the combination of Modulator and Demodulator. What is the work of the modem? (Definition of Modem) This communication device provides users with access to the Internet by converting digital signals to analog and vice versa. Modems are placed in several important categories, internal, external and PC card, according to their application and location.
Internal modems are placed inside mobile phones, tablets, laptops, etc. in the form of a chip, and as soon as the Internet is activated, this part also starts working. The price of this type of modem is lower than foreign models.
External modems as an independent device are usually placed in office and residential environments to provide your connection to the Internet. They are easier to install and set up, require a special power supply, can be connected with a cable, and the connection status is determined with the help of modem lights, which is one of the most important features of this type of modem.
Pc card is another type of modem that is designed as a credit card and is placed inside a laptop. This card is easily removed and you can remove it from the laptop when you don't need the internet. pc card can be considered as a combination of internal and external modems, and you need a telephone line to connect to the internet.
What is the use of modem?
As mentioned, the most important task of the modem is to convert digital signals to analog and vice versa. The modulator section of the modem receives the computer's digital information and converts it into an analog signal. Then it is possible to transfer them through a telephone line or cable. The demodulator section of the modem reversely converts the received analog signals into digital ones so that they can be read by the computer. Modem is a very important device and one of the main parts for using the Internet, which allows computers and other devices to send and receive information through the Internet.
Modem
ADSL modem
The first model of the very common and practical models of modems is the ADSL modem. This model is connected to the telephone network using the telephone port and communicates with the Internet service provider. By using this modem, data transfer is done by two wired and wireless methods.
VDSL modem
This modem is very similar to ADSL modem. The difference between the two is in the way data is transferred. With the help of VDSL modem, data transmission is done through optical fiber. This increases the amount of bandwidth and communication speed in the network.
Wimax modem
The WiMAX modem is the first modem offered in the country, which provided the possibility of establishing the Internet without the need for a telephone line. These types of modems are connected to internet provider networks with the help of a SIM card. For this reason, there is no need to use a landline. These modems are very useful for situations where a person does not have access to a landline.
3G/4G LTE modem
This type of modem is also an example of widely used modems that connects to the Internet completely wirelessly through mobile services. Operators who provide mobile services provide Internet connection by placing different stations transmitting waves, and the difference between 3G and 4G is their bandwidth.
TD-LTE modem
The technology used in this type of modem is similar to WiMAX modems, except that the internet speed is higher in them. This type of technology can be used in different modems such as modems that work with adapters and electricity and portable modems that use batteries.
Old modem and router applications
Modems have other uses besides the Internet, and by making some small changes, you can use them for other things as well.
WiFi strengthening
With the help of old modems and routers, you can expand and extend your Wi-Fi internet range at home. The modem is used as a Wi-Fi extender. You can use a router to connect to the main router or modem and strengthen Wi-Fi in different parts of the house without the need for an extender.
Do not play a network
In games, several computers are connected to each other with the help of a network and are used to play online games. Because modems have several LAN ports, they easily establish connections between several different computers, and you can play group and online games with friends or family members.
Use the modem's extra ports
Modems have an internal switch and you can use them as a switch using the ports on it. Therefore, you no longer need to buy a switch, and wherever you need a switch to connect two or more computers, the best option is a modem.
