Being able to switch at 1mhz and having to switch 1 million times in a second are different things. You can want a very fast switch but not to do it often. Tha

Being able to switch at 1mhz and having to switch 1 million times in a second are different things. You can want a very fast switch but not to do it often. That's the only way I can rescue these sentences which I agree are a bit confusing.