Abstract: An apparatus and method for interconnecting a plurality of independent software modules by means of specially configured software objects called "Input" and "Output". The software objects are implemented through library functions which include functions for making an Output object, making an Input object, adding actions to Input objects, making connections between the Input and Output objects of various software modules, sending messages from one software module to another, and receiving messages sent by another software module. The invention also provides a system for interconnecting a plurality of hardware modules, each of which may employ different internal data formats. Additionally, a novel graphical user interface is provided, whereby a user can create, destroy, inspect and/or hide connections between software modules, as well as display data flow between modules.

Abstract: A method and apparatus for scoped interprocess message switching between a sender process and a plurality of receiver processes is disclosed. Messages supported may be scoped to message scopes of a message scope type of "Session" or one of a plurality of non-session message scope types including a message scope type of "File". Messages may also be scoped to message scopes of an intersection or union of message scope types. Intersection and union of message scope types comprise "File in Session" and "File or Session". Scoped messages supported further comprise request and notice messages. Receiver processes supported comprise handler processes and observer processes. Request messages may be observed as well as handled, and notice messages may be handled as well as observed. Handler and observer processes may be non-executing as well as executing. Local receiver processes are selected for session scoped messages. Remote as well as local receiver processes are selected for non-session scoped messages.