[5.13] Common Operating Systems
- DOS -- developed
by Microsoft Corporation
for use with
computers like the IBM PC and other compatibles.
- Macintosh -- the
first popular graphical user
interface, characterized by windows and icons on a desktop.
Environments -- the
successful Microsoft graphical user interface called
Windows 3.1 was
overlaid on DOS. In 1995, a new operating system called
was introduced for the Intel
personal computer market. Windows 95
is one step on the way to Windows NT, a full general-purpose
operating system that can be used by all kinds of computers and
- Unix -- a powerful,
portable operating system popular
with scientific workstations. The X-Windowing graphical user
interface is grafted onto Unix.