- Programmed Airline Reservation System
PARS (Programmed Airline Reservation System) is an
IBMproprietary large scale airlinereservation application, executing under the control of IBM's ACP (and later its successor, TPF). Its international version was known as "IPARS".
In the early days of automated reservations systems in the 1960s and 1970s the combination of ACP and PARS provided unprecedented scale and performance from an on-line real-time system, and for a considerable period ranked among the largest networks and systems of the era.
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