off-the-shelf
A packaged item ready for sale. The term can refer to hardware or software.
online
Generally means that a computer is connected to a network and is thereby ready for operation or interaction over the network. It may also refer to the ability to connect to the Internet by virtue of having an Internet account.
operating system (OS)
The software that controls the allocation and usage of hardware resources such as memory, central processing unit (CPU) time, disk space, and peripheral devices. The operating system is the foundation on which software programs (applications) are built. Popular operating systems include Windows 98, Windows NT, Mac« OS and UNIX.
operational data range
This term refers to the range of date data that a software program will accept from the user. It does not refer to data accuracy or the accuracy of interpretations based on two-digit year shortcuts. (The latter is handled by the "date window.")
Original Equipment Manufacturer (OEM)
An OEM typically purchases components from other manufacturers, integrates these into its own product, and then sells that product to the public.
OS/2«
A protected mode, virtual memory, multitasking operating system for personal computers based on the Intel 80286, 80386, i486 and Pentium processors. Important OS/2 subsystems include Presentation Manager, which provides a graphical user interface, and LAN Manager, which provides networking facilities.
