ANSWERS: 10
  • The followings are few advantages and disadvanatages of analog vs digital communication. 1.The first advantage of digital communication against anlog is it's noise immunity.In any transmission path some unwanted voltage or noise is always present which cannot be eliminated fully.when signal is transmitted this noise gets added to the original signal causing the distortion of the signal.However in a digital communication at the receiving end this additive noise can be eliminated to great extent easily resulting in better recovery of actual signal.Incase of analog communication it's difficult to remove the noise once added to the signal. 2.security is another priority of messaging services in modern days.Digital communication provides better security to messages than the analog communication.It can be achieved through various coding techniques available in digital communication. 3.in a digital communication the signal is digitised to a stream of 0 s and 1 s.So at the receiver side a simple decision has to me made whether received signal is a 0 or a 1.Accordingly the receiver circuit becomes simpler as compared to the analog receiver circuit. 4.Signal when travelling through it's transmission path gets faded gradually.So on it's path it needs to be reconstructed to it's actual form and re-transmitted many times.For that reason AMPLIFIERS are used for analog communication and REPEATERS are used in digital communication.amplifiers are needed every 2 to 3 Kms apart where as repeaters are neede every 5 to 6 Kms apart.So definitely digital communication is cheaper.Amplifiers also often add non-linearities that distort the actual signal. 5.Bandwidth is another scarce resource.Various Digital communication techniques are available that use the available babdwidth much efficiently than analog communication techniques. 6.when audio and video signals are transmitted digitally an AD(Analog to Digital) converter is needed at tansmitting side and a DA(Digital to Analog) converter is again needed at receiver side.While transmitted in analog communication these devices are not needed. 7.Digital signals are often an approximation of the analog data(like voice or video) that is obtained through a process called quantisation.The digital representation is never the exact signal but it's most closely approximated digital form.So it's accuracy depends on the degree of approximation taken in quantisation process.
  • In short, They are two different methods of sending an electronic signal from A to B. ANALOGUE is a simpler technology, signals are continuous, but are prone to noise & interference, exactly what is transmitted is recieved, without being altered. when the signal is weak or the equipment not perfect some reception can give some picture / sound. can be intercepted by other parties with the same technology. DIGITAL is more complex, analogue is converted to digital, & is then transmitted in the form of electronic pulses on/off or High/Low 0-5v or 5v-15v (on =1, off =0). When these pulses are recieved, they can be added to or removed from the existing data, this is known as Forward Error Correction. therefore creating a clearer picture & better sound quality. it is also secure & data can be encrypted to stop interception from unwanted parties. Trouble is when there is a significant loss of data or slightly faulty equipment while Broadcasting there is No Picture / Sound at all.
  • While previous answers are correct, there are some clarifications that could be made: - When talking about general costs / benefits, digital is better, because it is easier to change software than hardware (for analog), and software can additionally change the function of the communication. (EG using a traditional voice channel to transmit images, like on mobile phones). - Other than speaking face-to-face, and maybe free-to-air tele, pretty much ALL communcation these days goes through a digitised phase: the "where", and the size of this phase/s between the 2 communicating parties can vary. - In physics terms ALL physical communication is ANALOG, and the distinction between it and digital becomes one of how information within the ANALOG signal is represented.
  • Definition of Digital - A method of storing, processing and transmitting information through the use of distinct electronic or optical pulses that represent the binary digits 0 and 1. Advantages of Digital - ? Less expensive ? More reliable ? Easy to manipulate ? Flexible ? Compatibility with other digital systems ? Only digitised information can be transported through a noisy channel without degradation ? Integrated networks Disadvantages of Digital - ? Sampling Error ? Digital communications require greater bandwidth than analogue to transmit the same information. ? The detection of digital signals requires the communications system to be synchronised, whereas generally speaking this is not the case with analogue systems. Definition of Analogue - Analogue is a transmission standard that uses electrical impulses to emulate the audio waveform of sound. When you use a phone, the variations in your voice are transformed by a microphone into similar variations in an electrical signal and carried down the line to the exchange. Advantages of Analogue - ? Uses less bandwidth ? More accurate Disadvantages of Analogue - ? The effects of random noise can make signal loss and distortion impossible to recover
  • In regard to TV, there is no blocky effect with analog transmission (sometimes the TV gets blocky with digital transmission).
  • Analogue signals uses less bandwidth compared to digital siglas.
  • Advantages of digital communication: 1. It is fast and easier. 2. No paper is wasted. 3. The messages can be stored in the device for longer times, without being damaged, unlike paper files that easily get damages or attacked by insects. 4. Digital communication can be done over large distances through internet and other things. 5. It is comparatively cheaper and the work which requires a lot of people can be done simply by one person as folders and other such facilities can be maintained. 6. It removes semantic barriers because the written data can be easily chaned to different languages using software. 7. It provides facilities like video conferencing which save a lot of time, money and effort. Disadvantages: 1. It is unreliable as the messages cannot be recognised by signatures. Though software can be developed for this, yet the softwares can be easily hacked. 2. Sometimes, the quickness of digital communication is harmful as messages can be sent with the click of a mouse. The person oes not think and sends the message at an impulse. 3. Digital Communication has completely ignored the human touch. A personal touch cannot be established because all the computers will have the same font! 4. The establishment of Digital Communication causes degradation of the environment in some cases. "Electronic waste" is an example. The vibes given out by the telephone and cell phone towers are so strong that they can kill small birds. Infact the common sparrow has vanished due to so many towers coming up as the vibrations hit them on the head. 5. Digital Communication has made the whole wordl to be an "office." The people carry their work to places where they are supposed to relax. The whole world has been made into an office. Even in the office, digital communication causes problems because personal messages can come on your cell phone, internet, etc. 6. Many people misuse the efficiency of Digital Communicatio. The sending of hoax messages, the usage by people to harm the society, etc cause harm to the society on the whole .... by nishanth kumar vaishnav
  • well all of this has help, but the only one i looked at was the first 1, all of yourz are pooo answers !!!!
  • ITS GOOD
  • Noise can be easily detected in Digital Commu. as compare toAnalog Commu. Since Signal to Noise Ratio will be improve. As all of the same. Nand Kishore Chhipa

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