Modem means modulator and demodulator. It is a device that you use to transmit data and receive data through a communication channel. These channels can be a cable, a telephone line and an optical fiber.
1. The first answer to the question why a modem is needed is because we need a converter to be able to transfer data to the analog system of the telephone. Today we can also change data that is digital to analog mode. The modem then changes the signal to digital through demodulation. This is the simple explanation about the processes that are carried out in a modem. Other processes that take place in a modem are error correction, error detection, data compression, and encryption.
2. The second answer to the question, why do you need a modem? it is to provide higher quality and faster data transfer. There are fast modems that will eliminate most companies’ problem of time delays. They also need this to provide real-time customer support. It also provides fast communication that many people need.
3. The third answer to the question, why do you need a modem? it is to provide good graphics quality for larger applications. This is especially necessary for applications with programs like Java. A fast modem is also needed to create applications for multimedia and 3D games.
4. The fourth answer to the question why a modem is needed is to create the local area network for homes or offices. Today, this is one of the cheapest ways to connect one computer to another. This facilitates faster communication like in a hospital where patients and medical staff would have quicker access to health records. For the entertainment industry, this is necessary to provide clearer images and sounds like HDTV.
5. A modem is also needed because there are still remote places in the world that doctors, lawyers, and government officials don’t go often. They can only be contacted by other people through telecommunications, which can be facilitated with a modem and a computer.
6. Another reason a modem is needed is to facilitate a country’s rapidly growing economy. Most of the businesses today operate through online communication. You can easily close a business deal over the Internet. People can also shop online which became a trend these days because of the modem.