Twenty-eight Arabic letters. It is widely circulated because of the influence of Islam.
Arabic alphabet is the writing form of Arabic. In addition to Arabic, there are other languages in the world (especially in areas where Islam is more prosperous) that use Arabic letters to spell, such as Persian, Pashto, Uygur and so on.
Related introduction
It is worth noting that in some languages, all vowels can be expressed by modifying Arabic letters, and people no longer infer pronunciation from the text when reading articles, such as Uygur.
Arabic alphabet belongs to Aramaic alphabet, * * * has 28 letters representing consonants, and the Koran only adds vowel symbols.
I'm exhausted. I tried several methods. I thought of this method at the beginning, but finally forgot to extend