Consciousness is just a cycled pattern of reiteration through a biological logicgate network. a Biological system's logicgate's however can alter in shape and form to either support or disrupt continuation. It's the main reason why if a person gets a knock on the head they can suffer amnesia and why when you sleep at night you are unaware of the passage of time etc, as each of those has instances where areas of the brain are no longer accessed or are suffering from a disruption.
Death occurs naturally when the Conscious cycle can no longer be reiterated due to cellular ageing.
I guess you could say that Consciousness is just continued re-evaluation of property states while it is still possible to evaluate.
Stryder, that's far, FAR to shallow a view! Except for the 'biological' part, what you've described is much what any computer that can handle a few hundred digits is doing when you order it to compute pi as far out as it can. :shrug:
You make absolutely no allowance for self-awareness or for original thought - and both of those are VERY much an integral part of consciousness.