Name: Electromagnetic Spectrum II
Uploaded: 2019-07-19
Duration: 4 min 21 s
Description: Why does the wavelength of high energy radiations decrease from ultraviolet rays to gamma rays, but their frequency increases? Watch this video to learn more.

Question

Compare analogue and digital signal transmission by considering the difference between analogue and digital signals and the benefits of digital when compared to analogue. Draw a diagram of an analogue wave and a digital wave.

Accepted Answer

Analogue signals Digital signals

1) These signals are having a continuous range of values 1) These signals are having discontinuous values

2) These signals are represented by sine waves 2) These signals are represented by square waves

3) These signals record sound waves in their original form 3) These signals convert sound waves into a binary waveform

4) Natural sound and human voice are examples of analogue signals. 4) Computers, printers and speakers are examples of devices using digital signals

The main advantage of a digital communication system is that it can be saved and retrieved as situation demands. But it is not possible with analogue signals. Analogue signals are having lower quality than digital signals. Digital communication technology is more resistant to noise and interference from outside sources. Analogue wires are expensive, and they are not easily portable. In addition to all these, digital communication system provides extra security to our information signals.

The following figure represents an analogue wave and a digital wave

Compare analogue and digital signal transmission by considering the difference between analogue and digital signals and the benefits of digital when compared to analogue. Draw a diagram of an analogue wave and a digital wave.

Important Questions on The Electromagnetic Spectrum

Learn and Prepare for any exam you want !