2. Analog filtering

2.1 Glossary

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2.1.1 Meaning of the word "analog

The term "analog" comes from the Greek analogos (αναλογος) meaning "which is related to, proportional". By extension to the original meaning of analog, a quantity is said to be analog if its measurement varies continuously.

Electronics uses analog circuits based on resistors, inductors, capacitors, diodes, transistors, operational amplifiers, etc., as a calculator or processing medium. There is an analogy between the mechanical system (the first...