Search code examples
microprocessors

What is the difference between processor (CPU) and microprocessor?


what is the difference between "processor (CPU)" and "microprocessor" in the sense of computer architecture? These terms confuse me.


Solution

  • The difference is purely historical. In the old days of lore, the CPU used to sit in a separate enclosure, like here:

    Processor (CPU) unit of a Vax 11/750

    A microprocessor is a particular implementation of processor which happens to fit in a single electronic component (chip) package:

    PowerPC 601 microprocessor

    Clearly, nowadays all processors are microprocessors, so the distinction is completely blurred.