Stands for “Cost Per-Mile” CPM is a business standard for testing and selling ads on sites, advertising impressions. The AM’ is obtained from the Roman numeral for “thousand.” Sites that sell advertising can assure an advertiser a particular quantity of impressions set depending on that promise Examples the CPM rate.

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Martin Cooper (inventor) Inventing handheld cellular mobile phone Making world’s first handheld cellular mobile phone call. Martin “Marty” Cooper (born December 26, 1928) is an American engineer.