different between cpu vs microcode

cpu

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microcode

English

Etymology

micro- +? code

Noun

microcode (usually uncountable, plural microcodes)

(computing) The collective microprograms in a CPU, used to run machine instructions.

Verb

microcode (third-person singular simple present microcodes, present participle microcoding, simple past and past participle microcoded)

(computing, transitive) To write or rewrite (program instructions) in microcode, typically to optimize performance.

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