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

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

of radio reached a peak at over 350

hours

in 1990,

then

this

figure plummeted to less than 100

hours

in 2015.

Conversely

, the

use

of television increased consistently from less than 50

hours

at the beginning of the period to around 200

hours

in 2010, but

this

figure slightly decreased in 2015. It is

also

interesting that smartphones started to be used in 2000.

This

figure skyrocketed from 55

hours

in 2000 to 350

hours

in 2015. The

use

of computers was roughly equal to the

use

of smartphones in 2015. Remarkably, the

use

of computers doubled from 150

hours

in 2000 to 300

hours

in 2005.

Overall

,

while

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