The Arabic Alphabet has 28 letters. The shape of these letters changes depending on their position in the word, whether isolated; in the beginning of the word (initial); in the middle (medial); or at the end (final). http://www.sakkal.com/Arab_Calligraphy_Art1.html
Language: In this image you can see all of the Farsi letters and all 4 of their forms.There are 32 letters in the Farsi alphabet, but unlike our alphabet each letter is written differently depending on where it is in a sentence.This means if you were to learn to write in Farsi, you would have to memorize 32 letters x 4 forms to know how to write Farsi and that would equal 128 different characters to memorize!
The Arabic alphabet is the Arabic script as it is codified for writing the Arabic language. It is written from right to left, in a cursive style, and includes 28 letters. Because letters usually stand for consonants, it is classified as an abjad. Time period: 400 to the present. Parent systems: Proto-Sinaitic, Phoenician, Aramaic, Syriac, Nabataean.