"Analog" means something that essentially resembles something else; an analog signal has the same smoothly varying structure as a real-world signal such as a sound, for example. "Digital" means composed of digits, in other words, of numbers. The real world is not composed of numbers (although if you examine it on a sufficiently small scale, it turns out to be quantized, which means that in a sense, the real world is digital after all) but you can approximate the real world if you use enough numbers to do so. The simplest example of this (in case my explanation is not already clear) is in sound recording technology. The old-fashioned vinyl record album contains a groove in which the shape of the vinyl reflects the pattern of a sound wave. No numbers are involved. A needle riding in that groove will physically move the way a sound wave moves. Then you have a digital medium such as a compact disc. It records a series of numbers which can be translated by a computer into a sound.
An DAC convert digital signal to analog signal i.e Digital to Analog Converter. An ADC convert analog signal to digital signal i.e Analog to Digital Converter.
When you convert digital signal to analog, it is called as an analog signal. The device used is called digital to analog converter.
There are four possible combinations of encoding techniques -Digital data, digital signal -Digital data, analog signal -Analog data, digital signal -Analog data, analog signal
The basic elements in digital signal processing are an analog to digital converter, digital signal processor, and digital to analog converter. This process can take an analog input signal, convert it to digital for processing and offer an analog output.
where an analog signal is to be converted into digital signal,because in some applications we need digital signal where we have analog signal that is we use an A/D converter
An analog-to-digital converter is a device which converts an infinite resolution analog signal to a finite resolution digital signal.
by analog to digital,digital to analog signal
The basic difference is that in analog modulation the modulating signal is analog signal and in digital modulation it is in digital form.
An analog-to-digital converter is a device which converts an infinite resolution analog signal to a finite resolution digital signal.
Digital signal processing is the best compared to analog signal. It is because the digital signal is moreefficienterror freeimmune to noisethan an analog signal
digital signal
There are several devices called digital to analog converters for this purpose. 1s and 0s of the digital signal are used to represent the digital signal in analog form.