This is essentially the same question as the difference between analog and digital. With analog electronics a voltage is used to represent (or to be an analogy for) some physical attribute in the real world. So for an analog transmission, at its simplest, a sound signal (say) is converted to a voltage, the voltage sent down a cable, then at the other end the voltage converted back into sound with a loudspeaker. With a digital system, the physicial attribute is measured and sent as a series of numbers, the numbers being converted to binary. For a digital transmission, the sound signal is converted to a series of numbers, sent as binary, and converted back to a sound signal at the other end. The advantages of digital is that it makes multiplexing much easier - making it easier to put many signals down the same physical cable. It also makes compressing the signal much easier - this is particularly effective for digital television transmission; 30-40 digital channels can be sent over the same bandwidth as 4 or 5 uncompressed analog channels. Also, digital is much more resiliant against noise - the digital receiver has to make a decision about each bit - is it there or not; noise can be pretty extreme before this becomes impossible, with analog, once noise is added its very difficult to remove it. The historical disadvantage of digital is that digital encoding and decoding equipment was expensive compared with the analog. Over the last 10 years or so, digital electronics has become much cheaper and more powerful.
In Data transmission two types of transmission methods are available. One was ANALOGUE data transmission and DIGITAL data transmission.
IN analog data transmission the data will be transmitted in analog signals like sinusoidal waveforms. But IN digital data transmission method the data will be transmitted in digital signals like square pulse's (in binary values).
please help me to understand the word transducer
we can do analog signal processing also but it is very expensive as comparing with digital signal processing that's why we generally choose the digital signal processing.DSP allows programmable operations.But we cannot do in ASP.
Major disadvantage is that telephone lines are very susceptible to variations in transmission quality that can affect amplitude Ann
AGND means Analog ground & DGND means Digital ground. Due to fast switching of digital signals it is possible for noise generation which affect nearby analog signals.(If common gnd used for both analog & digital). If separate gnd used for both the signals.Noise will not affect the signals.
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.
The basic difference is that in analog modulation the modulating signal is analog signal and in digital modulation it is in digital form.
Analog can reach higher speeds.
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Analog is displayed in a clock like instrument digital is shoun in numbers
In analog ckt there is more distortion but in digital there is no distortion. Analog is a continues value digital is a discrite value(0 or 1). To measure analog is very difficult but in digital it is very easy. compare to analog the digital system is very compart for us. H.L.Kiran
Digital phones are more secure, can send both voice and data transmission, and has better sound quality. Analog phones are less expensive and only transmit voice.
Analog is a clock with the moving hands on it, while digital is computer generated numbers.
Analog means continuous transmission of data whereas digital means discrete transmission of data. In analog communications we are transmitting finite amount of data in infinite amount of information. so,there is a possibility of occurrence of noise. where as in digital we are transmitting finite amount of data in finite amount of information. so , out of these two, digital is most efficient.
Analog transmission came before digital ones
Analog signals are continuous while digital signals are discrete
Analogue to digital is a conversion process not a transmission process.
Analog data differs in intensity. Digital consists of ones and zeros. Think of the difference as being like the difference between a drum and a violin. A drum is either on or off, and so is a piano. Although a violin does turn on and off, it constantly gives out information without turning on and off and it gradually goes between loud and soft. In a car, your speedometer is analog. Your headlights are digital. (They are either on or off) At one time they were transmitted differently. Analog data was sent by changing the height or frequency of a electronic sigh wave. Today, both are sent by a series of ones and zeroes. Then a receiver changes them back to analog or digital.