central processing unit [central processing units](part of a computer) noun [UK: ˈsen.trəl ˈprəʊ.ses.ɪŋ ˈjuː.nɪt] [US: ˈsen.trəl ˈproʊ.ses.ɪŋ ˈjuː.nət]
微處理器noun
microprocessor [microprocessors](the entire CPU of a computer on a chip) noun [UK: ˌmaɪk.rəʊ.ˈprəʊs.es.ə(r)] [US: ˌmaɪk.rə.ˈprɑːs.es.r̩]