CS100 Study Guide - Final Guide: Discretization
14 Dec 2016
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Continuous information is analog (temperature is a continuous phenomenon) Infite values between 22 and 23, these are continuous. Mercury thermomenter is continuous, digital thermometer is digital: digital might jump from 22. 2 to 22. 3. Discrete really just means that it measures things in discrete levels and not continuous: digital comes from finger, or digital. Anything that can be counted on your finger is discrete. Most things in the natural world are continuous. Time is also continuous, so is distance. Hard to make a lot of message with just one light: light on is one signal, light off is another, we can add more lights for more signals (2 lights is 2^2, 20 lights is 2^20 signal) Computers have billions of switches (transistors: used for 2 things. Switches example ( all logic that exist in a chip is used based on logic like this) Each one or 1 can be stored in memory.
