What is a modem and what are its features?
Modem is an electronic device which converts the digital signals of a computer into specific frequencies to travel over telephone or cable TV connections. At where it's landing, the data will be received by another modem that is responsible in spieling the frequencies to turn it back into digital data. Any computer uses modems for getting connected to other network.
Today modem seems to have significantly changed since the seventies that is when the 300 baud modem was used to connect computers to BBSs (bulletin board systems). Using the type of modem each bit, digitally displayed by a 1 or, has been sent as a specific tone. The receiving modem answered with the frequencies dedicated to it so both modems can "talk at the same time." To know more on huawei e220 driver, pay a visit to hsdpa usb modem.
It is a device which produces signals. Without going farther to the technical words it can be said as a producer of signals and these signals are good to be transmitted easily. These signals are then decoded to the original digital data. Thus we can see that it is mainly a device that helps in the creation of the digital data or the signals. Now that the main function of the modem is clear to all, it can be explained in technical words too in which we can say that the modem transmit the signals of the analog and thus encodes the information into digital signals.
There are accessible plethoras of modems currently available for the market's several networking needs. Modems could be first classified by the type of program they support, and then other factors follow, like if the modem is going to be internal or external and what abstraction it facilitates. Despite the plethora of modems available today, coming up to a decision won't be that hard.