Analog computers have a lot of history. You can Google analog with neural network or differential equations to get many results. They are fast with low power, can have precision issues, and require custom, chip design.
Mixed signal ASIC’s often use a mix of digital and analog blocks to get the benefits of analog. It’s especially helpful for anything that eats lots of power or to prevent that (eg mobile).
https://en.m.wikipedia.org/wiki/Analog_computer
Mixed signal ASIC’s often use a mix of digital and analog blocks to get the benefits of analog. It’s especially helpful for anything that eats lots of power or to prevent that (eg mobile).