A system consisting of a computer, process control equipment, and possibly a process interface system.
Note: The process interface system may be part of a special-purpose computer.

In a spread-spectrum communications system, the signal gain, signal-to-noise ratio, signal shape, or other signal improvement obtained by coherent band spreading, remapping, and reconstitution of the desired signal.

A functional unit that adapts process control equipment to the computer system in a process computer system.

A functional unit that consists of one or more processors and their internal storage.

In a computer, a functional unit that interprets and executes instructions.
Note: A processor consists of at least an instruction control unit and an arithmetic unit.

1. A situation in which a signaling link becomes unavailable due to factors at a functional level higher than level
2. This may be because of, for example, a central processor failure. It may also be due to a manually initiated blocking of an individual signaling link. [T1.226-1992]

In the Federal Government, the process of obtaining services, supplies, and equipment in conformance with applicable laws and regulations.

The interval between the initiation of a procurement action and receipt of the products or services purchased as the result of such action.

A package of ITSEC software and/or hardware, providing functionality designed for use or incorporation within a multiplicity of systems [ITSEC].

A description of the security capabilities of a product, giving the necessary information for a prospective purchaser to decide whether it will help to satisfy his system security objectives [ITSEC].