Search

This part of the paper describes GPSS II, a general purpose digital systems simulation program based on a block diagram language. The program is a result of incorporating improvements dictated by extensive experience in the application of an earlier version. However, this article is self-contained. Development and application of the language are illustrated by means of an example.

This part discusses use of the simulator for problems associated with urban trafic studies. Included are simulation methods for intersections and networks, vehicular characteristics and input, and the network trafic control mechanism. The general purpose simulator is used to write a general trafic program which is used with data cards specifying the geometry, signal settings, statistical distributions, and other details of the particular network selected for simulation.

An approach to the simulation of an industrial enterprise for the purpose of evaluating alternative decision algorithms is illustrated. As an example, simulation of an integrated steel mill is discussed in sufficient detail to display programming techniques.

The simulator is employed to determine a set of parameters defining a telephone "intercept" system with appropriate characteristics. The intercept system is automatic and involves standard data processing components--data exchange, disk files, and audio response units.