Analogue Electronics

Analogue electronics (or analog in American English) are electronic systems with a continuously variable signal, in contrast to digital electronics where signals usually take only two different levels. The term "analogue" describes the proportional relationship between a signal and a voltage or current that represents the signal. The word analogue is derived from the Greek word ανάλογος (analogos) meaning "proportional".

Read more about Analogue ElectronicsAnalogue Signals, Inherent Noise, Analogue Vs. Digital Electronics

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Analogue Electronics - Analogue Vs. Digital Electronics - Design Difficulty
... Analogue circuits are harder to design, requiring more skill, than comparable digital systems ... main reasons why digital systems have become more common than analogue devices ... An analogue circuit must be designed by hand, and the process is much less automated than for digital systems ...

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