Use an inductive pick-up. This actually detects a plug wire firing.
The speed of rotation of a shaft can be measured using a tachometer. A tachometer works by measuring the rotational speed of the shaft in revolutions per minute (RPM) or rotations per second. It provides a digital or analog display of the shaft's speed.
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Analog computing mechanisms can reach a solution much faster than digital computing mechanisms can for the same problem; but to get more digits of accuracy, analog computing mechanisms require expensive high-precision, low-drift, temperature-stable components, while digital computing mechanisms can be expanded inexpensively to as many digits as desired.
place filters (splitters) on the line everywhere that an analog phone is used
Analogue
It wouldn't be impossible, but you will need to also replace the wiring harness that goes with it.
analog media means analog media.
Contact your local vehicle dealer. They will know if it is possible to upgrade the vehicle you have and if it can, they can get the necessary module and know how to properly install it.
I thank that antalog time is the time on a analog clock, It makes since analog time on a analog clock.
Analog Modulation
Analog signals can be received using an analog receiver.
Analog