Not knowing whether input data has been accepted by the information system, the user enters the data again, resulting in duplicate event data. The control plan that helps to prevent this error is: key verification confirm input acceptance check digit verification online prompting

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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)