The Tamil script is believed to have developed from the Brahmi script.
Inscriptions from the 2nd century AD portray a variety of the Tamil Brahmi
script that is noticeably similar to the writing system narrated in the ancient
Tamil grammar Tolkappiyam. The Tamil
letters evolved gradually and during 5th century AD and 6th century AD, it
adopted a form known as vatteluttu. To know more read:
