This can happen at any number of places, but in the simplest case the OS is called on every tick of a clock, and decides which process should get the CPU for the next tick of the clock.

这个数字可以发生在任何地方，但在最简单的情况下操作系统被称为每滴答的时钟，并决定哪个进程应该得到CPU时钟的滴答。

youdao

This can happen at any number of places, but in the simplest case the OS is called on every tick of a clock, and decides which process should get the CPU for the next tick of the clock.

这个数字可以发生在任何地方，但在最简单的情况下操作系统被称为每滴答的时钟，并决定哪个进程应该得到CPU时钟的滴答。

youdao