In 1985, IBM-PC DOS Version 3.1 update released.
PC DOS 3.1 was the first OS to provide a network support.
In 1876, Alexander Graham Bell patented the telephone.
The patent for the telephone became recognized as the most valuable patent in history. Yet early efforts to popularize the telephone were met with disappointment.
In 1996,the first surface photos of Pluto were taken by the Hubble Space Telescope.
Hubble’s snapshots of nearly the entire surface of Pluto showed that Pluto is a complex object, with more large-scale contrast than any planet, except Earth.