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30,000 BCE
Cave paintings
30,000 BCE: Cave paintings, the earliest known form of visual communication. -
3500 BCE
Invention of hieroglyphic
3500 BCE: Invention of hieroglyphic writing in Ancient Egypt. -
3000 BCE
Emergence of cuneiform
3,000 BCE: Emergence of cuneiform writing in Mesopotamia. -
400 BCE
First mail systems
4th century BCE: First mail systems appear in Persia. -
1500
the movable-type printing press
15th century: Johannes Gutenberg invents the movable-type printing press. -
Morse code
1837: Samuel Morse invents the telegraph and develops Morse code. -
the telephone.
1876: Alexander Graham Bell patents the telephone. -
first mobile phone
1973: The first mobile phone is developed. -
Advances in artificial intelligence
2020s: Advances in artificial intelligence and communication technologies transform how we communicate