Lecture Notes for Digital Electronics

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Lecture Notes for Digital ElectronicsRaymond E. FreyPhysics DepartmentUniversity of OregonEugene, OR 97403, 20001 Basic Digital ConceptsBy converting continuous analog signals into a nite number of discrete states, a processcalleddigitization, then to the extent that the states are su ciently well separated so thatnoise does create errors, the resulting Digital signals allow the following (slightly idealized): storage over arbitrary periods of time flawless retrieval and reproduction of the stored information flawless transmission of the informationSome information is intrinsically Digital , so it is natural to process and manipulate itusing purely Digital techniques. Examples are numbers and drawback to digitization is that a single analog signal ( voltage which is afunction of time, like a stereo signal) needs many discrete states, orbits, in order to givea satisfactory reproduction.

The drawback to digitization is that a single analog signal (e.g. a voltage which is a function of time, like a stereo signal) needs many discrete states, or bits, in order to give a satisfactory reproduction. For example, it requires a minimum of 10 bits to determine a voltage at any given time to an accuracy of ˇ 0:1%. For transmission, one ...

  Notes, Analog