Electronic analog computing is also still being researched, eg https://arxiv.org/abs/2006.13177 https://arxiv.org/abs/2006.13177 ("Analog multiplication is carr

Electronic analog computing is also still being researched, eg https://arxiv.org/abs/2006.13177 https://arxiv.org/abs/2006.13177 ("Analog multiplication is carried out in the synapse circuits, while the results are accumulated on the neurons' membrane capacitors. Designed as an analog, in-memory computing device, it promises high energy efficiency")