Neuromorphic computing simulates analog processes of the human brain. Digital (more properly binary) computing can *simulate* but not *duplicate* analog processes. Various scientists are working to integrate actual analog computing in binary systems. See link below.
Apart from the inherent dichotomy between analog and digital, we tend to have a limited view of the “brain.” We can’t divorce its biological host. The brain developed and always remains an integrated, inseparable part of the physical body. It is not a “thing” but a process.
Perhaps most importantly, only humans have consciousness. A brain without consciousness is, well, brain dead. We do not yet know the “architecture” of consciousness. We do know we all have intellect, which helps us to survive and to reason. We also have an identity created by our upbringing, cultural environment, etc., and we have a “database”, the knowledge we accumulate during our life and which is strictly personal and shaped by culture. The brain is more that a binary calculator.
Designing a computing system that makes logical decisions is relatively easy. An example is IBMs Big Blue beating the world chess champion. But only biological entities can have a brain that can develop its own consciousness – and subconsciousness.
The article below addresses some of these issues. It is followed by a list of resources.