| The black box of the A. C. Nielsen Company, also known as the People Meter, is the principal device used to determine what people in the United States are watching on television. The People Meter sits on top of the TV set and is programmed with the age and gender of each member of the household. When members of the household watch TV, they enter their code into the People Meter, which records the time and the channel being watched. Every evening at a specified time the People Meter sends its recorded data to a central computer via a modem, and statistics are gathered to determine what TV programs that day were the most popular. |
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