The Sumerians of the Akkadian empire developed a writing system based on pressing marks into wet clay using a stylus. Many of these clay tablets survived.
Rasmus Malling-Hansen invented the first commercially sold typewriter. Soon, typed correspondence became the standard for every type of writing except personal correspondence. Typing became an invaluable skill.
Ray Tomlinson, a computer engineer at MIT, sent an email to a computer sitting right next to him. He doesn't remember exactly what he wrote.
The tech boom makes it possible to create a high quality book equal to those produced by traditional publishers. Authors are now able to upload a manuscript, choose a format and a cover, and print as needed. This eliminates the cost of storing unsold copies.