Abstract: A computer system for generating a cause effect matrix as a user interface to develop a control program based on the cause effect matrix and to compile and download the resulting program into a programmable controller. A cause effect matrix diagram is used to develop a function block diagram program which is a standard IEC 1131-3 language. The function block diagram is translated into structured text which is compiled into intermediate code. The intermediate code is translated into the native code for the micro-processor of the target control system, including but not necessarily limited to the Motorola processor MPC-860. The automation of a cause effect matrix diagram to generate a function block diagram permits additional capability by allowing functions for causes, intersections, and effects. Because special functions may be included, the results of a cause generate timing functions or other computations before initiating the effect.

Abstract: The MIN, but not the ESN, associated with a mobile station is entered into a permanent subscriber record associated with a private wireless communications system. During at least the initial registration attempt for the mobile station in the private system, the mobile station sends its MIN and ESN to the private system. The private system then asks a public wireless communications system for verification of the subscription status of the mobile station. If the status is favorable, e.g., the mobile station has a valid subscription to the public system, the private system updates its permanent subscriber record to include the ESN and continues with the registration process. If the verification response indicates an unfavorable subscription status, e.g., the ESN/MIN combination is invalid, the private system preferably refuses to allow the mobile station to register.

Abstract: A hand held and hand operated device for compacting and crushing an aluminum beverage can is disclosed. The device comprises an elongate handle that is grasped by the user's hand. An aluminum can is held in a gripper element at one end of the handle. The free end of the aluminum can extending from the gripper element is then pounded against a solid object in a manner similar to pounding one's clenched fist against a table top thereby crushing and compacting the aluminum can.