Operating systems
All PC functions are controlled by an operating system (OS);
applications are written to run under a specific OS; it is therefore important
to know what is necessary to run a specific PC and a specific application:
· the DOS (Disk
Operating System) is the oldest OS; it works on small equipment; its
different versions followed the market trends and technological improvements
(e.g. bigger memory management, etc.).
· WINDOWS is not really
an OS in itself; it is a powerful graphic interface for DOS users, which makes
their work much more friendly. It helps to manage extended memory; to integrate
various applications, exchanging files via its clipboard. Different versions
exist, as well as multimedia extensions;
· OS/2 is a multitasking
and multiusers IBM OS which means that the user can execute different programs
simultaneously (e.g. printing a file while working on another one, or formatting
a diskette while updating a data base or a spreadsheet). It allows DOS and
WINDOWS applications to be run under its control; different versions are
available, as well as multimedia extensions;
· APPLE System 7 runs on
the Apple series of computers;
· UNIX is a multiusers,
multitasking operating system, mainly used on workstations. More powerful than
usual PCs; multimedia capabilities have been added to the
software.22
22 Multimedia premies on
UBIX workstations - David SIMPSON - Systems Integration -January
1992.