Summary: On this paper, we reviewed Spiking neural network (SNN) built-in circuit designs and analyzed the traits amongst combined-sign cores, fully digital cores and large-scale, multi-core designs. Recently reported SNN built-in circuits are compared below three broad classes: (a) Large-scale multi-core designs that have devoted NOC for spike routing, (b) digital single-core designs and (c) blended-sign single-core designs. Lastly, we end the paper with some directions for future progress.

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Numerous manufacturers have tried to combine the smoothness of a mechanical watch motion with the precision of the quartz crystal mechanism: Seiko’s Spring Drive mechanism marries mechanical energy with electronic regulation, while Citizen’s Eco-Drive adds solar energy and XC6SLX45-2CSG324I a tiny kinetic generator to the mix. However watchmaker Bulova took a distinct path in 2010 when it released its Precisionist mechanism: The corporate claims that this advanced take on quartz watch expertise has raised the bar, creating probably the most exact watch to function a steady-sweep second hand [sources: Bulova; Seiko; DiFranco].

Within the determine shown above, we are able to observe that the output transitions both from $-V_sat$ to $+V_sat$ or from $+V_sat$ to $-V_sat$ whenever the sinusoidal enter sign is crossing zero volts. In other words, output changes its value when the input is crossing zero volts. Therefore, the above circuit can be called as inverting zero crossing detector.

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