0
What else can I help you with?
What is better-digital or analog communication?
It depends on applications. At the middle - short distances analog communication can be much more efficient than digital. If you work in communications, you may find the explanation - why? in IEEE Comm. Letters, vol.16, no. 5, 2012, pp.573-576, as well as in my Research Gates Profile. With regards.
How has the telephone been improved with technology?
Some improvements have been lighter phones, call waiting, caller ID, and conference calls. There have also been advances that help businesses. At the company I work with all the phones are hooked into the computer terminals and they run with a program on the terminal. Open it up and you get a listing of every employee and you just have to click a button to dial their number. I don't know if this really falls under your question, but theres been advances in telephone AI. Instead of having people take your calls a program can look for key words of your question and find the information you need much faster. By next year a person will not be able to tell if they are talking to a human or a program, unless the developer is asked to make the voices sound more robotic.Hope this helps.AnswerTelephone conversations started as analog signals over wires. Later, many of the signals were transmitted long distance by microwaves through the air. For several years now, the user's voice travels as digital signal over most of the distance. The normal analog telephone is connected to the CO (central office) through copper wires. This portion of the conversation is in analog form. The analog voice is converted to digital form in the CO and it travels as high speed data to the destination CO, where it is converted back to an analog form to be sent to the end user. More and more analog telephones are being replaced by digital telephones. The digital telephone converts the users analog voice signal from the microphone to a digital signal inside the telephone itself. The digital data then travels to the destination user with very little chance for noise or distortion to affect its quality. The signal is often so good that you often don't know if the connection has been lost or not without the usual hiss and static that we are accustomed to. The digital signals on the public phone system travel by microwave over land, from ground stations to satellites, or as light waves over optical fiber or through the air. Light communications by air are only for short distances. Companies like Vonage, Skype, Covad, and Speakeasy provide what is called VoIP or Voice over Internet Protocol. With VoIP, you can make a call using several methods.One is by using your computer to convert your analog voice to digital and then transmitting the digital conversation over your digital Internet connection.Another VoIP method is by connecting your regular analog telephone through the service provider's 'black box'. The box is a device that has its own small computer inside which manages the telephone conversation, communicating with the Internet to find the service provider's server. The voice signal is converted to digital form. The controller then sends the conversation through the VoIP server to the destination user. If the destination user has a VoIP telephone connection they receive the conversation in digital form. If the destination user has a regular analog connection, the digital conversation data must first be converted back into analog form. This can be done in the CO through special equipment designed for this purpose.Yet, another VoIP method is by using digital telephones on a digital data network. The digital phones can communicate through a VoIP PBX (private branch exchange)to the Internet or directly to the service provider out on the Internet.Having the conversation in digital form enables several new options. The digital data sent over the network can be saved to a hard drive for later retrieval. Because the signal is digital, it does not degrade with time like an analog signal recorded on magnetic tape. The digital voice can be analyzed by special algorithms to detect stress and other nuances not discernable to the human ear. The digital voice can be manipulated to make it sound robotic, change its gender, or any of hundreds of other effects. Special features can be supported by adding additional data to the data stream. Much more information can be transmitted than that available by the regular Caller ID. Live digital video images can be transmitted along with the voice data. Business presentations can be sent along with the presenter's voice and live video to several remote locations in branch offices.The traditional analog telephone is converging with the computer data network, entertainment networks, and others.There are many changes ahead on the horizon.AnswerTelephone system today integrates the internet and telephone technologies in order to achieve a more efficient an cost effective communication system. Virtual PBX phone system for example allow users to enjoy the benefits of VOIP and the traditional phone systems at the same time.they made cell phones, and more equipped than the old ones
What is the difference between analog and digital representation?
Digital signals are now replacing analog for television transmission worldwide. Digital signals use a stream of digital data (2 differing signal levels to carry binary data) instead of a continuously variable signal level. The biggest difference is that digital data is more resistance to corruption than its analog equivalent. It is this characteristic that means we see a clean signal rather than one with noise in the image as is the case with a poor analog signal. Digital signals can also be compacted using a technique called data compression. Compression allows signals to take far less bandwidth than they would otherwise need and so more channels can be carried in a given bandwidth. This compression allows HD signals to be broadcast. Broadcasting of HD analog signals would prove challenging. It is important to understand that digital does in itself not mean higher resolution. Digital SD signals are exactly the same resolution as their analog equivalent. The comparison cannot be made with HD as HD transmission is always digital. Digital transmission also allows a variety of additional data to be carried within the same signal. Surround sound is one of the more common benefits of auxiliary data.
Where can one find information about a digital circuit?
One can find information about a digital circuit on a number of different informational websites. One can find information on digital circuits on Wikipedia, HowStuffWorks, and Infoplease.
What are the advantages of analog modulation over digital modulation?
1)digital modulation can easily detect and correct the noise. where as analog modulation has little complexity 2)security is more in digital modulation 3)digital modulated signal can traverse a long distance compared to analog modulation
How a digital electric more useful than an analog electric meter?
in a digital meter you get a digital value of your measurement. but in analog meter you have to check the position of the pin along the scale and find out the value.
Can you replace a digital dash on a 1994 Ford Crown Victoria with an analog?
If you can find a police cruiser that had an analog dash, I believe you can.
How do you connect dvi PC output to lcd dvi input?
You will need a DVI cable. Note that DVI can be a digital signal, an analog signal or both. Look in the manuals the see which the computer and monitor support. It is normally digital, which might be referred to as DVI-D. If analog is supported, it will be called a DVI-A. A DVI connection that carries both will be called a DVI-I. If you find you have a choice, use the digital signal rather than the analog.
Where can one find information about an electric digital to analog converter?
Information about a digital to analog converter can be found on the site Hardware Secrets which divulges that real world signals such as light and sound can be converted into digital signals by a circuit called ADC (Analog-to-digital converter) so that the information, once converted, can be processed and stored digitally.
Can you adapt your analog TV for digital?
You can adapt your analog TV by using a digital converter, which you should be able to find fairly easily among the big TV names, such as comcast, verizon, and fios.
Does analog signals suffer from attenuation more than digital signals?
With an analog signal, it shrinks with distance. So its gets harder to tell when it is "there". A digital signal shrinks with distance. So as long as it is detectable, it is "there". So as a wave gets attenuated and then not by, say, variations in weather, to respond to an analog signal gets more difficult. With a digital wave, if you can find it -- it's there.
Can you write a sentence using the word digital nce using the word digital?
I have a digital clock; I find it easier to read than analog clocks with hands and regularly spaced numbers.
How do you know if your TV is digital or analog?
"Standard-definition" (meaning 480i) Cathode-ray tube televisions are analog. CRT TV's are easily identifiable by their immense weight and the fact that their depth nearly matches their width and height. Newer, hi-def (720p, 1080i/p) televisions are almost all either lcd, plasma, or dlp, all of which are digital. for digital TV monitor shouldnot be of CRT.
Are there separate photography classes for both analog cameras and digital cameras?
There are combined photography classes organized online, or from professionals in photography studios. Although digital cameras are more common, you can still find photographers, who give classes for analog cameras.
Where could one find integrated analog circuit designs?
One can find in a mixed signal integrated circuit having both analog circuits and digital circuits. One can also purchase a book from Amazon explaining in more detail.
Where can one find the definition of digital computer?
The definition of digital computer can be found listed on nearly any dictionary website such as TheFreeDictionary. The definition is really rather basic in that a digital computer is simply a device for processing information.
Who discovered hybrid computer?
Nobody, many were deliberately built (mostly in the 1950s and 1960s) to solve problems that were beyond the capabilities of both digital computers and analog computers available at the time. They were specifically built to divide the problem so as to best take advantage of the speed of analog computers (where precision was not needed) and the precision of digital computers (where speed was not needed). A very common use was to have the analog computer very quickly determine an approximate answer, then have the digital computer start from that value using an iterative technique to successively improve that answer until the desired precision was reached. Alone the analog computer could never get the desired precision and without a good starting approximation the digital computer would be too slow. There is much less need for such things now, mostly because inexpensive modern digital computers are much faster than the fastest very expensive digital computers of the 1950s and 1960s.
