thanks for helping..........I went to both the website and i got the explanation but their is no time mentioned.....like from when it strated or when it changed or anything .....do u know any web which has mentined about the times???

4 answers

sorry for repeating the question again....and thnaks a lot
This is from the first site I recommended:

"Inscribed in clay: from 3100 BC

In the river plains of Mesopotamia, where writing first develops, clay is an easily available commodity. It becomes the writing material of the temple scribes. Their implement is a piece of reed cut to form a rectangular end. These two ingredients define the first script. Characters are formed from the wedge-shaped marks which a corner of the reed makes when pressed into the damp clay - a style of writing known as cuneiform.

Clay tablets, dried hard in the sun, make an almost indestructible temple archive. But they are not very convenient for sending messages.

The Egyptian papyrus: 3000 BC"

This is from the second site.

"We see the first evidence for this with incised "counting tokens" about 9,000 years ago in the neolithic fertile crescent."
thnaks a lot
You're welcome.