Block diagram of Modem is as below: A block diagram of a modem is shown in the above figure, which comprises a transmitter, a receiver and two interfaces. The digital signal to be sent is given to the transmitter. The modulated carrier that is received from the distant end is given to the receiver.
What is modem with diagram?
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 modem and explain its working?
A modem is typically used to send digital data over a phone line . The sending modem modulates the data into a signal that is compatible with the phone line, and the receiving modem demodulates the signal back into digital data. Wireless modems convert digital data into radio signals and back.
What is the work of modem in computer?
A modem modulates and demodulates electrical signals sent through phone lines, coaxial cables, or other types of wiring ; in other words, it transforms digital information from your computer into analog signals that can transmit over wires, and it can translate incoming analog signals back into digital data that your ...
What is a modem class 12?
Modem (Modulator/Demodulator) Modem is a device that converts digital signal to analog signal (modulator) at the sender's site and converts back analog signal to digital signal (demodulator) at the receiver's end, in order to make communication possible via telephone lines.
What are two types of modem?
There are three types of modems: cable, digital subscriber line (DSL) and dial-up . A cable modem uses coaxial cables that connect to the back of the modem and the bolt-like outlet in your wall or on your cable box. This type of modem delivers high speed internet to your device.
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 a modem and its types?
A modem or broadband modem is a hardware device that connects a computer or router to a broadband network . For example, a cable modem and DSL modem are two examples of these types of Modems. ... Similarly, when an analog signal is received, the modem converts it back (“demodulates” it) to a digital signal.
Where is a modem used?
Modems are used for performing both activities like as sending and receiving of the digital data in between with multiple computer systems . Then this data is transmitted over the telephone lines with using V.
How does a modem make its connection?
Modems bring the Internet to your home
A modem is a device that connects your home, usually through a coax cable connection , to your Internet service provider (ISP), like Xfinity. The modem takes signals from your ISP and translates them into signals your local devices can use, and vice versa.
What is the old name of Internet?
This eventually led to the formation of the ARPANET (Advanced Research Projects Agency Network) , the network that ultimately evolved into what we now know as the Internet. ARPANET was a great success but membership was limited to certain academic and research organizations who had contracts with the Defense Department.
Which connection is used at high speed?
The term broadband commonly refers to high-speed Internet access that is always on and faster than the traditional dial-up access. Broadband includes several high-speed transmission technologies such as: Digital Subscriber Line (DSL) Cable Modem.
What are the 4 types of networks?
- LAN(Local Area Network)
- PAN(Personal Area Network)
- MAN(Metropolitan Area Network)
- WAN(Wide Area Network)
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 is the purpose of using router?
Forwarding. The main purpose of a router is to connect multiple networks and forward packets destined either for directly attached networks or more remote networks.
