Once starbucks had established its presence in thousands of cities internationally, the company sought to increase the number of purchases by existing customers with a strategy that led to new in-store merchandise, including compilation cds and high-speed wireless access.

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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)