In MODEMS ________________.
In MODEMS ________________.
The correct option is B A digital signal changes some characteristic of a carrier wave
In MODEMS A digital signal changes some characteristic of
a carrier wave.
A modem (modulator–demodulator) is a network hardware
device that modulates one or more carrier wave signals to encode digital
information for transmission and demodulates signals to decode the transmitted
information. The goal is to produce a signal that can be transmitted easily and
decoded to reproduce the original digital data. Modems can be used with any
means of transmitting analog signals, from light-emitting diodes to radio. A
common type of modem is one that turns the digital data of a computer into
modulated electrical signal for transmission over telephone lines and
demodulated by another modem at the receiver side to recover the digital data.
A digital signal refers to an electrical signal that is
converted into a pattern of bits. Unlike an analog signal, which is a continuous
signal that contains time-varying quantities, a digital signal has a discrete
value at each sampling point.
This is called amplitude modulation or AM. Frequency of
an input signal can also be changed. If this input signal is added to the pure
carrier wave, it will thereby change the frequency of the carrier wave. ...
Modulation schemes can be analog or digital.
In MODEMS A digital signal changes some characteristic of a carrier wave.
A modem (modulator–demodulator) is a network hardware device that modulates one or more carrier wave signals to encode digital information for transmission and demodulates signals to decode the transmitted information. The goal is to produce a signal that can be transmitted easily and decoded to reproduce the original digital data. Modems can be used with any means of transmitting analog signals, from light-emitting diodes to radio. A common type of modem is one that turns the digital data of a computer into modulated electrical signal for transmission over telephone lines and demodulated by another modem at the receiver side to recover the digital data.
A digital signal refers to an electrical signal that is converted into a pattern of bits. Unlike an analog signal, which is a continuous signal that contains time-varying quantities, a digital signal has a discrete value at each sampling point.
This is called amplitude modulation or AM. Frequency of an input signal can also be changed. If this input signal is added to the pure carrier wave, it will thereby change the frequency of the carrier wave. ... Modulation schemes can be analog or digital.
