What is an insertion point?
O A feature that substitutes symbols for text typed into the
document.
O A small picture whose location on the screen is controlled
by the mouse.
O A blinking vertical line where text will appear when you start
typing.

the answer to your question would be something called hertz. the unit of measurement called a hertz, which is one cycle per second, is used to measure clock speed. within one cycle, your computer processes, refreshes, or updates itself to the changes that it is going through. in the case of computer clock speed, one hertz equals one tick per second. the clock speed of computers is usually measured in megahertz (mhz) or gigahertz (ghz)