jan 1, 2400 BC - Clay Tablets in Mesopotamia
In the Ancient Near East, clay tablets were used as a writing medium, especially for writing in cuneiform, throughout the Bronze Age and well into the Iron Age. Cuneiform characters were imprinted on a wet clay tablet with a stylus often made of reed (reed pen). It implicitly challenged the perception that cuneiform tablets were used merely for basic accounting, such as tallying grain, rather than for complex astronomical calculations.
Added to timeline:
Pre Industrial Age