What is difference between analog and digital data.how they different in their transmission?

Answer 1

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.