Megahertz(MHz) is a measure of the clock speed of the CPU, a CPU with 200MHz means that the CPU clock ticks 200 million cycles(or 200 MegaCycles)per second.

• CPU的时钟速度是以兆赫兹（MHz）为单位的，一个200MHz的CPU意味着CPU时钟每秒振荡2亿次。