What is the function of modem in communication system?

What is the function of modem in communication system?

A modulator-demodulator, or simply a modem, is a hardware device that converts data from a digital format, intended for communication directly between devices with specialized wiring, into one suitable for a transmission medium such as telephone lines or radio.

What is the use of modems?

A modem is a small box that connects your devices to the Internet using cables. Unlike a router, a modem doesn’t provide your home with Wi-Fi connectivity. A modem acts as a digital translator, taking an information signal from your cable, fiber or phone lines and making it accessible to your computer.

What do modems use to communicate data?

To transmit digital data, the sending modem must first modulate, or encode, a computer’s digital signal into an analog signal that can travel over the phone line. A modem transmits data in bits per second (bps), with the fastest modems transmitting at 56K (kilobits per second).

What is the function of modem in Internet Class 10?

Answer: MODEM stands for MOdulator/DEModulator. It is a hardware device that enables a computer to send and receive information over telephone lines by converting the digital data used by your computer into an analog signal used on telephone lines and the converting back once received on the other end.

What are the features of modem?


  • AT Command Help Screens. AT commands allow you to control many of the functions of your modem.
  • Automatic Cable Sensor.
  • Automatic Calling Card Dialing.
  • Call Progress Detection.
  • Caller ID.
  • Analog Cellular Communications.
  • Dialing Stored Phone Numbers.
  • Digital Line Guard.

What is the meaning and function of modem?

A modem is a conversion device that converts signals from one device into signals another device can read. For example, a modem may covert the digital data of a computer into an analog signal that can be read and carried by a telephone line.

Do we need modem?

Routers and modems have traditionally been two separate devices that worked together to form your home network. However, with today’s technology, you don’t need a separate modem and separate router necessarily, as new combination modem and router units merge the two devices’ functions into one powerful gadget.

What is modem example?

Modem is defined as an abbreviation for modulator-demodulator, a device that makes it possible for computers to communicate with one another without being directly connected to each other. An example of a modem is the device used for a computer to communicate with a satellite.

What kind of data is received by modem?

2. Short for modulator/demodulator, a modem is a hardware device that allows a computer to send and receive information over telephone lines. When sending a signal, the device converts (“modulates”) digital data to an analog audio signal, and transmits it over a telephone line.

What does a modem connect to?

A modem turns your inbound connection (coax cable, telephone line, fiber optic line, or other) into an Ethernet connection, which then allows a Wi-Fi router to connect to the Internet. Modems are usually provided by your Internet Service Provider (ISP).

What is the full form of modem?

Modem is short for “Modulator-Demodulator.” It is a hardware component that allows a computer or another device, 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 digital data (1s and 0s) that a computer can recognize.

What is difference between Internet and WWW?

Internet is a global network of networks. WWW stands for World wide Web. Internet is a means of connecting a computer to any other computer anywhere in the world. WWW is more software-oriented as compared to the Internet.

How is a modem used in data communication?

A modem is the most probably used in data communication roadway. A modem converts the digital signals into analog signals. Modem acts just as an interface between LAN and internet. No traffic maintenance of modem is present. A modem can’t understand the intermediate process. The modem doesn’t know about its own destination path.

What is the definition of a modem device?

Modem, any of a class of electronic devices that convert digital data signals into modulated analog signals suitable for transmission over analog telecommunications circuits. A modem also receives modulated signals and demodulates them, recovering the digital signal for use by the data equipment.

What are the different types of modems used?

Types of Modems. Modem is abbreviation for Modulator – Demodulator. Modems are used for data transfer from one computer network to another computer network through telephone lines. The computer network works in digital mode, while analog technology is used for carrying massages across phone lines.

How is a modem different from a telephone line?

Modem is a device that enables a computer to send or receive data over telephone or cable lines. The data stored on the computer is digital whereas a telephone line or cable wire can transmit only analog data.