You must have heard Modem’s name before. But do you know in the right form what Modem is, how does it work?
By the way, through a modem, you can connect your computer with the available Internet connection through the existing telephone line.
However, NIC Modem is used to integrate with the computer motherboard. Rather it is available as a separate part that can be installed in PCI slots which you can find in the motherboard.
A modem is not required much in LAN, but it is needed in other internet connections like dial-up and DSL.
Types Of Modems
There are many types of modems that different from each other in Speed and Transmission rate.
- Standard PC modem
- Dial-up modems
- Cellular modem
- Cable modem
- DSL Modems
|Types of Modems||Details|
|Standard PC modem||Normal Modem That We See In Our Day to Day Life|
|Dial-up modems||It has a 56Kb data Transmission speed.|
|Cellular modem||It used on the laptop and enables it to connect at the same time|
|Cable modem||Which is 500 times faster than a standard modem|
|DSL Modems||DSL Modems are also very popular.|
So today I thought that why should you people explain what Modem is in English so that you people do not need to find somewhere else about it. Then let’s start without delay.
What Is Modem?
The full form of a modem is “ Modulator / Demodulator .” It is a hardware component that allows a computer or other devices, such as a router or switch, to connect to the Internet.
It converts or “modulates” an analog signal from a telephone or cable wire to a digital signal that a computer can easily recognize.
Similarly, it converts outgoing digital data into an analog signal in a computer or other device.
Who invented the asphyxia modem? In 1962, the first commercial modem was manufactured and sold by AT&T as the Bell 103. Earlier modems used to be “dial-up,” meaning they have to dial a phone number to connect with the ISP.
These modems operate in standard analog phone lines and also use the same frequencies as telephone calls, which limits their data transfer rate to a maximum of 56 Kbps.
Dial-up modems also require the full bandwidth of the local telephone line, which means that voice calls can interrupt your internet connection.
Valid Modern Modems Typically DSL and cable modems are among the ” Broadband ” Devices that are also called. DSL modems operate over standard telephone lines but use a wider frequency range. They allow for higher data transfer rates if we compare it with dial-up modems and also they do not interfere with phone calls.
Valid Modern Modems Typically DSL and cable modems are among the ” Broadband ” Devices are also called.
DSL modems operate over standard telephone lines but use a wider frequency range. They allow for higher data transfer rates if we compare it with dial-up modems and also they do not interfere with phone calls.
Cable modems send and receive data in standard cable television lines, which are typically coaxial cables. Most modern cable modems support DOCSIS or Data Over Cable Service Interface Specification.
That provides an efficient way to easily transmit TV, cable Internet, and digital phone signals into the same cable line.
NOTE: Since a modem converts analog signals into digital and vice versa, they require ADC or DAC. Modems are not required in fiber optic connections as signals are transmitted digitally from start to finish.
How does modem work?
As we know that Modem has a full form Modulator – Demodulator. Modems are used to transfer data from one computer network to another computer network.
In this, data transfer is done by telephone lines. Although the computer network works in digital mode, analog technology is used to send messages across the phone lines.
The modulator converts the information from digital mode to analog mode at the transmitting end and the same demodulator converts the same information from analog mode to digital mode at the receiving end.
Digitizing is the process in which the analog signals of a computer network are converted into digital signals in another computer network.