How to understand clock cycle and formula CPU execution time = number of CPU clock cycles / dominant frequency

Because with OneNote To make the , It's too troublesome to copy the formula , It's a direct screenshot .

 

 

Let's take a look at the definition of clock cycle ：

CPU Clock cycle ： Usually it is Beat pulse or T cycle , That is, the reciprocal of the dominant frequency , It is CPU The smallest unit of time in , Each action requires at least one clock cycle .

// In fact, the unit of second in the previous formula is ignored , Found that the molecule is 1, So it is mathematically expressed as reciprocal .