The chart below shows the total number of hours per month from 1980 to 2015 that people in the USA used modern technology divided into four categories.

The bar graphs illustrate the total number of

hours

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per month of modern technology used in the USA from 1980 to 2015. It is noticeable that the radio was the most popular technological device in America from 1980 to 2000. Particularly, the

use

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of radio reached a peak at over 350

hours

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in 1990,

then

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this

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figure plummeted to less than 100

hours

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in 2015.

Conversely

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, the

use

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of television increased consistently from less than 50

hours

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at the beginning of the period to around 200

hours

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in 2010, but

this

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figure slightly decreased in 2015. It is

also

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interesting that smartphones started to be used in 2000.

This

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figure skyrocketed from 55

hours

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in 2000 to 350

hours

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in 2015. The

use

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of computers was roughly equal to the

use

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of smartphones in 2015. Remarkably, the

use

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of computers doubled from 150

hours

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in 2000 to 300

hours

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in 2005.

Overall

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,

while

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the radio was popular in an earlier era, computers and smartphones became the most popular technological devices after the 2000s.