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The advantage of drum signals over smoke signals is that drum signals are faster, and you can transfer more information in the same period of time. The speed of drum signals is limited by how fast you can pound the drums, how fast you can hear the drums and still differentiate them as single beats, and how much multi-path echo distortion you get with drums. The speed of smoke signals is limited to how fast you can modulate the smoke into pulses, allowing them to differentiate into distinct puffs as they slowly rise into the air.

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What are signals of an emergency?

Signals of an emergency can include loud alarms or sirens, flashing lights, and urgent announcements over public address systems. Physical signs may involve smoke, fire, or unusual noises, as well as visible distress from individuals or crowds. Changes in normal behavior, such as people running or evacuating an area, can also indicate an emergency situation. Additionally, communication from authorities via social media or alerts can serve as important signals.


What were the means of communication in ancient time?

Before the phone, but after the common use of electricity, the most common method of communication quickly across country was the telegram. Before electricity, smoke signals were used, or sometimes signal flags of some kind.


Why FDM is for analog signals and TDM is for digital signals?

FDM stnds for frequency division multiplexing and it is used only in case of analog signals because analog signals are continuous in nature and the signal have frequency. TDM-stands for time division multiplexing and it is used only in case of digital signals because digital signals are discrete in nature and are in the form of 0 and 1s. and are time dependent.


A device that conveys information with analog signals and digital signals is called?

An Electronic Device


What are the lifeline signals?

Lifeline signals are visual or auditory signals used to indicate distress or the need for assistance, particularly in emergency situations. These signals can include hand signals, flares, whistles, or emergency beacons. In various contexts, such as outdoor activities or maritime operations, they serve to alert others to a person's urgent need for help. Effective use of lifeline signals can significantly enhance safety and improve the chances of timely rescue.

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