Ángela Ruiz Robles

Born in 1895, Ángela Ruiz Robles of Spain invented a precursor to ebook readers in 1949 called the mechanical encyclopedia, according to The Guardian.

The green metal box featured spools, audio, interchangeable reels on different subjects, a magnifying glass screen and light for reading in the dark, according to The Guardian.

Ruiz Robles died in 1975 at the age of 80, according to Google.