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A digital signal is a physical signal that is a representation of a sequence of discrete values (a quantified discrete-time signal), for example of an arbitrary bit stream, or of a digitized (sampled and analog-to-digital converted) analog signal. The term digital signal can refer to either of the following:
- any continuous-time waveform signal used in digital communication, representing a bit stream or other sequence of discrete values
- a pulse train signal that switches between a discrete number of voltage levels or levels of light intensity, also known as a line coded signal or baseband transmission, for example a signal found in digital electronics or in serial communications, or a pulse code modulation (PCM) representation of a digitized analog signal.
A signal that is generated by means of a digital modulation method (digital passband transmission), to be transferred between modems, is in the first case considered as a digital signal, and in the second case as converted to an analog signal.
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Describe what is meant by digital data?
data that can read barcodes
Difference between binary data and digital data?
Binary data refers to data that is represented using only two possible values, typically 0 and 1. This is the fundamental language of computers, where everything is ultimately represented in binary form. On the other hand, digital data is a broader term that encompasses any data that is stored or transmitted in discrete, non-continuous values. While binary data is a specific type of digital data, digital data can also include other numeral systems like decimal or hexadecimal.
What is digital steganography?
Hiding messages in digital data. See http://en.wikipedia.org/wiki/Steganography which will help.
What are advantages and disadvantages of digital image processing?
distorted data
What is an example of how computers can enhance data analysis?
Pixels from a digital photo are transformed into a map and into data on a spreadsheet.
What does digital footprints mean?
digital footprint means - data about you. Given by you and others from interactions in a digital world
What does DP mean?
Digital Photography Director of Photography Data Processing Digital Picture
What do you mean by sample and holds in DA and AD converters?
DA means conversion of digital data into analogous and AD means conversion of analogous data into digital one.
What is encoding technique?
There are four possible combinations of encoding techniques -Digital data, digital signal -Digital data, analog signal -Analog data, digital signal -Analog data, analog signal
What would you call a device that works with binary data?
Digital Data is data that is stored in binary, and a Digital Device is any device that works with binary data
How to Generate digital data for bpsk modulation?
How to Generate digital data for bpsk modulation?
What are the digital encoding schemes?
converting digital data to digital signal.
What type information system would be recognized by digital system?
A digital system can recognize digital data i.e. data only in form of 0 & 1, if data is not in digital form we have to convert it using analog to digital converters.
Is a PC process digital or analog data?
digital
What is meant by digital data?
data that can read barcodes
What is the difference between a modem and a codec?
* Codec is for coding analog data into digital form and decoding it back. The digital data coded by Codec are samples of analog waves. * Modem is for modulating digital data into analog form and demodulating it back. The analog symbols carry digital data.
What is the purpose of a link?
A data link is basically a telecommunication connection from one place to another where the digital data information is sent and received. This could mean that data is sent from one computer to another.
