A digital computer stores all kinds of data (text, numbers, images, audio and video) in binary (base 2) instead of decimal (base 10), which we human beings are used to. Explain why this is the case and discuss the different binary representations that are used for this.                                                                                                                              (b) In your own words, compare and contrast periodic pulse trains and nonperiodic pulse trains in the context of digital signal processing. Illustrate your understanding of these concepts with two examples in each case.

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