Question

_________is used to modulate the analog signal into digital signal

(1)switch

(2)modem

(3)cable

(4)none of these ​

Answer 1

Answer:

2. modem

Explanation:

Modem is used for modulation and demodulation

Modems are intended to convert digital signals to analog and vice versa. ... The modem converts the analog signal on the phone line into a digital signal into the computer. Modulation is the process of converting an analog signal into a digital signal, and demodulation converts it back to analog.

Difference between Modulation and Demodulation. Modulation is the process of influencing data information on the carrier, while demodulation is the recovery of original information at the distant end from the carrier. Modem is the equipment that performs both modulation and demodulation.

A modem is a device or program that enables a computer to transmit data over, for example, telephone or cable lines. Computer information is stored digitally, whereas information transmitted over telephone lines is transmitted in the form of analog waves. A modem converts between these two forms.

The process of recovering the original signal from the modulated wave is known as demodulation or detection. ... When the modulated wave is picked up by the radio receiver, it is necessary to recover the audio signal from it. This process is accomplished in the radio receiver and is called demodulation.

Answer 2

Answer:

2: modem

Explanation:

modem is used to modulate the analog signal into digital signal