While not used as commonly today, KIPS was a way to quantify how many instructions a computer could execute per second.

Here's why it's not as common now:

* More Complex Instructions: Modern computers execute far more complex instructions, making simple instruction counts less meaningful.

* Different Architectures: Different computer architectures have varied instruction sets, making direct comparisons difficult.

* Performance Metrics: We now use more sophisticated metrics like MHz, GHz, and FLOPS (Floating Point Operations Per Second) to assess computer performance.