hamza
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|}*Standard form of number 2 in Egypt is slightly different
In addition, the Arabic alphabet can be used to represent numbers (Abjad numerals), a usage rare today. This usage is based on the Abjadi order of the alphabet. ʼalif is 1, ب bāʼ is 2, ج ǧīm is 3, and so on until ي yāʼ = 10, ك kāf = 20, ل lām = 30, ... ر rāʼ = 200, ..., غ ġayn = 1000. This is sometimes used to produce chronograms.
History
The Arabic alphabet can be traced back to the Nabatean alphabet used to write the Nabataean dialect of Aramaic, itself descended from Phoenician. The first known text in the Arabic alphabet is a late fourth-century inscription from Jabal Ram (50 km east of Aqaba), but the first dated one is a trilingual inscription at Zebed in Syria from 512. However, the epigraphic record is extremely sparse, with only five certainly pre-Islamic Arabic inscriptions surviving, though some others may be pre-Islamic. Later, dots were added above and below the letters to differentiate them (the Aramaic model had fewer phonemes than the Arabic, and some originally distinct Aramaic letters had become indistinguishable in shape, so in the early writings 15 distinct letter-shapes had to do duty for 28 sounds!) The first surviving document that definitely uses these dots is also the first surviving Arabic papyrus (PERF 558), dated April 643, although they did not become obligatory until much later. Important texts like the Qurʼan were frequently memorized; this practice, which survives even today, probably arose partially from a desire to avoid the great ambiguity of the script.
Yet later, vowel signs and hamzas were added, beginning sometime in the last half of the seventh century, roughly contemporaneous with the first invention of Syriac and Hebrew vocalization. Initially, this was done by a system of red dots, said to have been commissioned by an Umayyad governor of Iraq, Hajjaj ibn Yusuf: a dot above = a, a dot below = i, a dot on the line = u, and doubled dots gave tanwin. However, this was cumbersome and easily confusable with the letter-distinguishing dots, so about 100 years later, the modern system was adopted. The system was finalized around 786 by al-Farahidi.
Arabic alphabets of other languages
Arabic script has been adopted for use in a wide variety of languages other than Arabic, including Persian, Kurdish, Malay and Urdu. Such adaptations may feature altered or new characters to represent phonemes that do not appear in Arabic phonology. For example, the Arabic language lacks a [p] phoneme, so many languages add their own letter to represent [p] in the script, though the specific letter used varies from language to language. These modifications tend to fall into groups: all the Indian and Turkic languages written in Arabic script tend to use the Persian modified letters, whereas West African languages tend to imitate those of Ajami, and Indonesian ones those of Jawi. The modified version of the Arabic script originally devised for use with Persian is known as the Perso-Arabic script by scholars.
Current uses of the alphabet for languages other than Arabic
Today Iran, Afghanistan, and Pakistan are the only non-Arab states using the Arabic alphabet to write their official national language.
The Arabic alphabet is currently used for:
Middle East and Central Asia
