Chapter 4

The Real World

Publisher Summary

This chapter explains analog and digital signals and their interconversion. Bridging the gap between the analog and the digital at some point is important if one wants to market the latest gadget. The chapter discusses how to make the analog-to-digital leap. Analog means a continuously variable signal. It means that the item being measured can be chopped up into infinite little pieces over time. The simplest form of digital is two states: It’s either there or not. Digital signals could be used to represent Boolean statements, one level indicating true and the other indicating false. Boolean logic is based on a digital representation of the world. Digital processing speeds eventually increased enough to ...

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