1968 American inventor Douglas Engelbart conducted a demonstration of his “oN-Line System”, or NLS, at the Fall Joint Computer Conference in San Francisco. The NLS system was the first to employ the practical use of hypertext links, the mouse, raster-scan video monitors, information organized by relevance, screen windowing, presentation programs, and other modern computing concepts.
1508 Dutch mathematician and cartographer Gemma Frisius was born in Dokkum, Friesland. He created important globes, improved the mathematical instruments of his day and applied mathematics in new ways to surveying and navigation. He described for the first time the method of triangulation still used today in surveying, and was the first to describe how an accurate clock could be used to determine longitude.
1425 The Catholic University of Leuven, Belgium’s largest, oldest and most prominent university, was founded by Pope Martin V. It is the oldest Catholic university in the world still in existence today