What do the braille dots represent?

The braille dots represent Russian letters.

The image shows several braille cells, each composed of a 2x3 grid of dots. Some dots are raised, indicated by their blue color in the image.

In braille, each combination of raised dots represents a specific letter or punctuation mark.

The image also shows a keyboard layout with Russian letters. By comparing the braille patterns to the keyboard layout, we can determine which letters are represented.

For example:

• The first braille cell in the top left has dots 1, 2, and 4 raised. This corresponds to the Russian letter 'Т'.
• The braille cell next to it has dots 1, 4, and 5 raised, corresponding to the Russian letter 'О'.
• The next braille cell has dots 1, 2, and 5 raised, corresponding to the Russian letter 'Н'.

Similarly, the other braille cells shown represent other Russian letters, which can be matched to the provided keyboard layout.