why digital signals are preferred over analog in com?
Answers were Sorted based on User's Feedback
Answer / rinkesh
because in the digital communication there are only two
voltage levels are used to communicate(to transfer or to
receive the signal), that are high voltage(1) and low voltage
(0). And easier to control the devices used in this type of
communication system.
Is This Answer Correct ? | 13 Yes | 5 No |
Answer / ravi kumar
In digital signals, there are the signals in the form of 0
and 1 . so if any unauthorised user access the information
then can't understand the information.so for security
purpose, this technique is used rather then analog
technique.
Is This Answer Correct ? | 14 Yes | 6 No |
Answer / preeti kumari(college of bio-m
1)almost all electronic devices use digital signals,because they remain accurate in shape and amplitude.2)transmission is at a higher rate and with a wider broadband width.3)it enables multi-directional transmission simultaneously.4)there is minimal electromagnetic interference in digital technology
Is This Answer Correct ? | 7 Yes | 2 No |
Answer / pavithranagamani
Digital signals have only two levels such as binary 0 and 1.so if noise is interfered,then it can be easily detected and recovered.Thus the error recovery is greatly utilised.But in analog signal,the signal has various voltage level at various time.
Is This Answer Correct ? | 1 Yes | 1 No |
Answer / peter jensen
My business is camera stabilizers for motion picture cameras.
We use analogue servo systems because the analogue servo loop is much smoother and stability is much better than digital servo systems. Operating a high performance analogue servo stabilizer (panning/tilting/rolling the camera) is smoother, powerful and trouble-free.
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / bala kumar
simple thing is it is easier to control than analog and it also offers less room for noise..
so the signal transmitted is more accurate..
Is This Answer Correct ? | 0 Yes | 3 No |
interviewr asked about sampling theorem and i said the common def.(i.e ...sam freq must >=s max freq in the signal for a sampled signal to recover without alising).he asked that i have a sin signal of freq 1hz and i sampled at two zero amplitude points can it be recoverable without aliasing????
what is the difference b/w cascading bts's and making bts master and slave?
i am a student i need the technical questions ased in wipro
what is transmission ?how transmission is done in nokia 3G?
Explain the importance of the biasing in transister circuits?
Define what do you mean by donor and acceptor impurities?
Why is antenna elevation angle at the ground station for satellite communication always kept above 5 degrees?
What is Cycling Frequency Hopping?
Which channel is used for SMS?
what are the types of handover?
Explain when a sample of germanium and silicon having same impurity density are kept at room temperature then resistivity of silicon will be higher than that of germanium, why?
whatis the test condition for the leakage current rating for 25kv high voltage test on PVC armoured cable?