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. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The bar graph shows the total number of

hours

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of four different digital devices usage in America from 1980 to 2015: television, computer, radio, and smartphone It is notable that the radio had remarkably the highest percentage between 1980 and 1990. At the beginning of the period, its figure was over 300

hours

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per month and increased to 380

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in 1990.

However

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, it started to decrease dramatically from 1995, with a figure of 270

hours

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per month. Meanwhile, the data shows clearly that the rest of the devices didn’t exceed even 100

hours

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respectively until 1995. It is easily observed that the usage of computers skyrocketed substantially in 2000. It even doubled after 5 years, and it became the dominant digital device that people used the most since the second half of the part.

In addition

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, smartphones appeared in 2000, those figures had a significant increase, with a figure of 350

hours

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per month.

On the other hand

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, radios became the lowest-consumed device in 2015.

Overall

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,

it is clear that

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computers and smartphones experienced notable increases in usage,

while

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radios showed a considerable decline as time passed.