Brain-computer interface (BCI) is a technology, which is not dependent on the conventional output channel (peripheral nerve and muscle tissue) of brain, to achieve the communication and control of the human brain to a computer or other electronic devices. It is a brand new approach for information exchange and communication. By acquiring the cerebral cortex electroencephalogram (EEG) and using signal processing techniques to interpret the brain's awareness-raising activities, it makes the dream to be true t...