Acronym for time-assignment speech interpolation.

See multitasking.

Abbreviation for transatlantic telecommunications (cable).
Note: TAT formerly stood for transatlantic telephone (cable).

Terrestrial Beacon System

Technical Committee

Transaction Capabilities Application Part

Abbreviation for trusted computing base.

Set of software, firmware, and hardware (where any of these three could be absent) that mediates the access of a set S of subjects to a set O of objects on the basis of a stated access mediation policy P and satisfies the properties: (1) M mediates every access to objects in O by subjects in S; (2) M is… (Read More →)

Abbreviation for technical control facility.

Abbreviation for Transmission Control Protocol. In the Internet Protocol suite, a standard, connection-oriented, full-duplex, host-to-host protocol used over packet-switched computer communications networks.
Note 1: TCP corresponds closely to the ISO Open Systems Interconnection--Reference Model (OSI--RM) Layer 4 (Transport Layer).
Note 2: The OSI--RM uses TP-0 or TP-4 protocols for transmission control.