|n.||1.||That which is analogous to, or corresponds with, some other thing.|
|2.||(Philol.) A word in one language corresponding with one in another; an analogous term; |
|3.||(Nat. Hist.) An organ which is equivalent in its functions to a different organ in another species or group, or even in the same group; |
|Noun||1.||analogue - something having the property of being analogous to something else|
|Adj.||1.||analogue - of a circuit or device having an output that is proportional to the input; "analogue device"; "linear amplifier"|
digital - of a circuit or device that represents magnitudes in digits; "digital computer"
|(electronics)||analogue - (US: "analog") A description of a continuously
variable signal or a circuit or device designed to handle such
signals. The opposite is "discrete" or "digital".|
Analogue circuits are much harder to design and analyse than digital ones because the designer must take into account effects such as the gain, linearity and power handling of components, the resistance, capacitance and inductance of PCB tracks, wires and connectors, interference between signals, power supply stability and more. A digital circuit design, especially for high switching speeds, must also take these factors into account if it is to work reliably, but they are usually less critical because most digital components will function correctly within a range of parameters whereas such variations will corrupt the outputs of an analogue circuit.
See also analogue computer.