Brain-like computing technology is generally divided into three levels: the structure level imitates the brain, the device level approaches the brain and the intelligence level surpasses the brain. Among them, the structure level imitates the brain refers to the analysis of the brain as a material and physiological object to obtain the basic unit (each The function and connection relationship (network structure) of neuron-like neurons and neuronal synapses, etc.; the device level approaches the brain refers to the development of devices that can simulate the functions of neurons and neuronal synapses, so that under limited physical space and power consumption conditions Construct a neural network system on the scale of the human brain; The level of intelligence beyond the brain refers to the brain-like computer through information stimulation, training and learning to produce intelligence similar to the human brain.
 Developing electronic equipment with the same function and density as the human cerebral cortex does not belong to the level of intelligence that surpasses the brain according to the text.