What is the advantage and disadvantage of digital vs analog?

Answer 1

Digital devices are easier to read Digital devices are easier to calibrate Digital devices are more accurate than its analog counterparts Digital devices are based on boolean algebra, an exciting aspect of mathematics, thus easy to analyse and design Digital devices allows for compacting. For example a lot of digital componets can be compressed into a small sized IC, thus making it possible to create devices like laptops, handsets etc Digital devices are generally lighter than its analog counterparts

Answer 2

"Digital" is discrete bits (ones and zeroes) that are easy to transmit and store, and easy to manipulate. But "Digital" is a mere approximation of the real world, whether the medium is visual or audio. "Analog" is the full representation of light-to-dark or quiet-to-noisy or any of a number of other axes. It's an accurate representation of the real world... but it's hard to store and transmit, and hard to manipulate. With digital images, for example, you might have a gray-scale photo with 256 levels of gray. In this format, a 250x250 pixel image would require 16,000,000 (16 million) bits of storage. You could come closer to an accurate representation of the real world by using 65536 levels of gray instead, which would now require 4.1 billion bits for the same image. You can keep adding gray levels until the cows come home but after a point there's "diminishing returns" when the human eye can't appreciate another level of subtlety, or the application at hand doesn't need all that fine grain. And with digital, you have rows and columns of data that you can run through various filters -- to enhance contrast, add artistic flourishes and so forth. Easy to manipulate! With analog -- old fashioned film, for example -- you get a more accurate representation of the real world: the molecules in the film react to the light they're exposed to, to provide the resulting image. Different film responds to light in different ways, each producing its own subtly different representation, and once it's on film, there's not much you can do with it. Unless you snag a digital representation, and then the sky's the limit!