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Both a human brain and a CPU perform computations.

A CPU is basically a serial device (a Von Neumann machine). Its computation steps are discrete. Its operations are chosen from a small set. It does some things, like arithmetic, extremely well. It never gets tired. It uses lots of energy. It interfaces with external devices (memory, ALU, Input and Output).

A human brain is a parallel interconnected device. Its computation steps are continuous. It has a large set of operations. It does some things, like face recognition, extremely well. It often gets tired. It is much more efficient energetically than a CPU. It interfaces with external devices (eyes, ears, nose, mouth, skin).

This is not even scratching the surface - Go read, say, "Goedel, Escher, Bach" in order to get a feel for how large this question is.

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15y ago
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13y ago

The difference between a brain and a computer is that a computer is so much smarter and a brain is not too smart.

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11y ago

brains are analog while computers are digital

brain is faster than the computer while the computer is slower than the brain

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10y ago

or and brain

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Q: What is the difference between a microprocessor and human brain?
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