Analysis of information sources in references of the Wikipedia article "خط میخی" in Persian language version.
In its fully developed form, the Sumerian script is based on a mixture of logographic and phonographic writing. There are basically two types of signs: word signs, or logograms, and sound signs, or phonograms.
Hittite is written in a form of the cuneiform syllabary, a writing system in use in Sumerian city-states in Mesopotamia by roughly 3100 B.C.E. and used to write a number of languages in the ancient Near East until the first century B.C.E.