Zhengyue Sun
ABSTRACT
With the development of the times, brain-computer interfaces using electroencephalogram (EEG) signal processing have become a development trend. This article is about the design and implementation of a 4-bit logical value comparator for EEG signal processing in Brain-Computer Interface (BCI). Also the article introduces the basic principles, components such as the different categories based on their “invasiveness”, and the various applications of BCI, which is a technology that enables the nervous system and external devices communicate with one other for information and are functionally integrated. The article then presents the design method and steps of the 4-bit logical value comparator, which consists of a 4-bit truth value selector and a 3-bit logical comparator. And the connection between inputs and outputs are described through their Boolean algebra and Karnaugh diagrams. The article also discusses the application prospects, challenges, and development trends of BCI, and points out that BCI is a promising and challenging emerging technology that will change the relationship between humans and other things.
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