The formula to calculate DPI is:
\[ \text{DPI} = \frac{\left(\frac{\text{THP}}{\text{TW}} + \frac{\text{TVP}}{\text{TL}}\right)}{2} \]
Where:
DPI stands for dots per inch, or pixels per inch. It is a measure of the total pixels per inch of a screen. The higher the number of dots per inch, the higher the resolution of the screen.
Are DPI and PPI the same? Typically DPI (dots per inch) and PPI (pixels per inch) are considered the same and are often used interchangeably. DPI is more general since it uses dots per inch, however, in 99% of cases one dot is equal to one pixel.
Let's assume the following:
Step 1: Calculate the DPI:
\[ \text{DPI} = \frac{\left(\frac{1920}{13.3} + \frac{1080}{7.5}\right)}{2} = \frac{144.36 + 144}{2} = 144.18 \text{ dots per inch} \]
Therefore, the DPI is approximately 144.18 dots per inch.
