Central or most important parts of something; in computing, individual processing units within a CPU chip.
From Latin cor meaning 'heart,' through Old French coeur. The computing sense emerged in the 2000s as processors began incorporating multiple processing units on single chips, extending the metaphor of centrality.
Multi-core processors revolutionized computing by mimicking how the human brain works - instead of one powerful processor handling everything sequentially, multiple cores work simultaneously like different brain regions processing various tasks in parallel.
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