Saturday, March 30, 2013

Digital electronics

Digital electronics, or digital circuits (e), representing signals by separate bands of similar levels, instead of a continuous range. All levels within the same signal representing the State. Relatively small changes in the levels of analog signals due to manufacturing tolerance, signal attenuation or parasitic noise do not leave a separate envelope, and as a result are ignored by the state signal sensing circuit.

In most cases a number of these states is two, and is represented by two teams effort: one near the reference value (which is what is usually called the "ground" or volt zero) and the value near the supply voltage, corresponding to the "false" ("0") and "true" ("1") values ​​the logical domain, respectively.

Digital techniques are useful because it is easier to get an electronic device to switch to one of a number of countries known to accurately reproduce continuous range of values​​.

Usually made of digital electronic circuits large associations of logic gates, simple electronic representation of Boolean logic functions


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