1. A semiconductor circuit for emulating a neuron firing process, comprising: a control device having a floating body connected between a ground and a first node; a first and second p-channel MOSFETs having source/drain electrodes connected in parallel between the first node and an electric power input terminal; and a first and second inverters connected in series between the first node and a gate electrode of the first p-channel MOSFET, wherein an output terminal of the first inverter is connected to a gate electrode of the second p-channel MOSFET to form a first feedback loop, wherein an output terminal of the second inverter is connected to the gate electrode of the first p-channel MOSFET through a second node to form a second feedback loop, wherein an electrical signal transmitted from a pre-synaptic neuron is input to a gate electrode of the control device, and wherein an electrical signal in response to a firing in the axon hillock of a post-synaptic neuron is gained from the output terminal of the first inverter.