Analysis of information sources in references of the Wikipedia article "Analogue electronics" in English language version.
aneroid barometer.
Until the radio came along...
Signals come from transducers...
The presence of noise degrades the performance of communication systems.
It is common in microwave systems...
Noise from an analogue (or small-signal) perspective...
In order for analog devices... to communicate with digital circuits...
Even within companies producing both analog and digital products...