Additional Notes
All Modern CPUs use pipelines.
Many CPUs have 8-12 pipeline stages.
The latest generation processors (Pentium-II, PowerPC-604 or G3, DEC Alpha 21164, SUN’s UltraSPARC) use multiple pipelines to get higher speed (Superscalar design).
The course: CPS220: Advanced Computer Architecture I covers the design of Pipelined and Superscalar processors.