Here's a breakdown:
* Origins: The script originated from the Aramaic script, which was used in the Nabataean kingdom. The Nabataeans, a Semitic people, lived in the area that is now Jordan and southwestern Syria.
* Early Development: Evidence suggests that an early form of Arabic script was already being used by the 4th century AD. It was initially written from right to left, just like modern Arabic.
* Formalization: The script was further developed and formalized by the 7th century AD, coinciding with the rise of Islam. This period saw the standardization of the script and its adaptation to writing the Quran.
* Evolution: Over the centuries, Arabic script has undergone some changes, but the basic structure and principles have remained largely the same.
So, while it's impossible to pinpoint the exact date, the 4th century AD marks the beginning of the use of Arabic script.