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a bit synchronizer is a ckt which made at the receiver end at that time when a bit interval end and next starts.
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What is nibble in digital electronics?
nibble is in electronic equal 4 bit nibble=4bit
Which US multiplexing hierarchy standard allows communication carriers to interconnect their existing digital and fiber optic systems?
Synchronous optical network (SONET)
What is data cable?
Just as electric cable transmits electric line power from the transmission center to receiving station so the data cable in digital communication transmits the encoded binary digits from a digital transmission system to a digital receiving system.
Why must sound and video input to a PC be converted from analog to digital?
Because in order to preserve the original sound, a digital sampling rate must be twice the frequency of the analog signalAnalog data is smooth and continuous, where as digital data, such as the binary data used in computers, has distinct gradations. The process of producing digital data by measuring data at a series of representative points is called sampling.
What are the stages occurring in the process of analog to digital conversion?
The analog signal goes through an ADC (Analog to Digital Converter) integrated circuit chip which analyzes it by taking samples in discrete steps which is a process called "quantizing": at each step the signal is rapidly matched against 255 digital levels.Each of the 255 levels has a matching eight bit digital (0 or 1) word associated with it. Thus the sigbal level at each step is converted into a binary number to represent that level, which is called "encoding", and the resulting stream of encoded steps is sent onwards as the digital signal.That process is also called PCM (Pulse Code Modulation).Further more detailed answersThere are ICs called ADC for analogue digital converter. The mechanism is simple: there is a precision reference voltage of any value. This reference voltage is compared to the input voltage. The comparator's bits output are scaled to represent a digital value in binary code for a 12 bits up to 2047. If the reference value is 10 volts then the least significant bit is 10/2048=4.9 x10-3 volts or 4.88 mV or thereabout. The least significant bit (LSB) can be monotonic.An analogue signal is compared to a fixed DC reference voltage. The comparator will add transition bits, each equivalent to a digital unit, [i.e. one bit: a 0 or a 1] until full scale is reached. An analogue value of xxx volts will be converted to xxxx bits for a 4 bit converter and into xxxxxxxxxxxx bits for a 12 bit convertor. The IC used is called an ADC or Analog to Digital Converter.NoteA Digital to Analogue Converter (DAC) does it the other way around with the same precision and results.
What are the Advantages of analog and digital communications?
Disadvantage of Analog Communication: 1)Analog Communication systems are costlier than digital communication system. 2)Less Security in Analog Communication 3)More prone to noise interference. Advantage of Analog Communication: 1)Transmission bandwidth required is less. 2)No need of synchronization. Advantage of Digital Communication: 1)Digital Communication systems are simpler and cheaper. 2)Using data encryption only permitted user are allowed to detect the transmitted data. 3)Since in Digital Communication, channel coding is used, therefore a large amount of errors may be detected 4)Since transmitted signal is digital in nature,large amount of noise tolerance may be tolerated Disadvantage of Digital Communication: 1)More transmission bandwidth required. 2)Digital Communication needs synchronization in case of synchronous modulation.
Why is Synchronization a problem in data communication?
synchronization between the multiplexer and demultiplexer is a major issue in data transmission. if the multiplexer and demultiplexer are out of synchronization a bit belonging to one channel may be received by the wrong channel. for dis reason , one or more synchronization bits are usually added to the beginning of each frame. these bits, called framing bit , follow a pattern, frame to frame, that allow the demultiplexer to syncronize with the incoming steam so that it can separate the time slots accurately. in most cases, this syncronization information consists of one bit
What has the author David Kinniment written?
David Kinniment has written: 'Synchronization and arbitration in digital systems' -- subject(s): Design and construction, Synchronization, Timing circuits, Digital integrated circuits
What has the author M Nesenbergs written?
M. Nesenbergs has written: 'Mean synchronization times for ATM cells' -- subject(s): Broadband communication systems, Integrated services digital networks
Why digital communication is known as digital communication?
because it's digital communication.
What has the author Umberto Mengali written?
Umberto Mengali has written: 'Synchronization techniques for digital receivers' -- subject(s): Digital communications, Equipment and supplies, Synchronization, Timing circuits, Design and construction
Why is digital communication known as digital communication?
In digital communication message is to be transmitted in digital form. That is why it is called so .
Which type of bit synchronization utilizes start and stop bits?
asynchronous
A standard for short-range wireless communication and data synchronization between devices?
Bluetooth
What is the function of the framing bit in an ISDN physical-layer frame?
Provides synchronization
What is the smallest unit in digital system?
smallest unit in a digital system is a
How data communication and digital communication differ?
In digital communication we talk about signal while in data communication we talk about data and the could be in the form of packets or frames.
