Cyrillic AlphabetThe Cyrillic alphabet was adopted by the Slavs in about the 9th century. Although it is named after St. Cyril (Constantine), it was not invented by St. Cyril. It is based on the system of Greek capital letters. If you know the Greek alphabet, many of the letters will be familiar to you.
The Cyrillic alphabet, with some modifications, is used by many nations in Europe and Asia, including Russia, Ukraine, Belorussia, Serbia, Macedonia, Bulgaria, Uzbekistan, Kazakstan, and Mongolia, to name only a few.
In this example, each letter--upper and lower case--is followed by the same letter in Russian cursive. You will notice that in the block style, the only difference between the upper and lower case letters is the size. In the cursive style, certain letters distinguish between upper and lower case.