Abstract: A web handling system is described, including a plurality of web handling controllers and a web handling process logic controller networked to form a ring network. A processor of the web handling process logic controller being configured to determine whether a fault exists within the ring network, and responsive to determining that a fault exists within the ring network, to generate and send signals throughout the ring network to switch the configuration of the ring network to at least one linear network.

Abstract: A web handling system is described, including a plurality of web handling controllers and a web handling process logic controller networked to form a ring network. A processor of the web handling process logic controller being configured to determine whether a fault exists within the ring network, and responsive to determining that a fault exists within the ring network, to generate and send signals throughout the ring network to switch the configuration of the ring network to at least one linear network.

Abstract: A web handling system is described, including a plurality of web handling controllers and a web handling process logic controller networked to form a ring network. A processor of the web handling process logic controller being configured to determine whether a fault exists within the ring network, and responsive to determining that a fault exists within the ring network, to generate and send signals throughout the ring network to switch the configuration of the ring network to at least one linear network.

Abstract: A web handling system is described, including a plurality of web handling controllers and a web handling process logic controller networked to form a ring network. A processor of the web handling process logic controller being configured to determine whether a fault exists within the ring network, and responsive to determining that a fault exists within the ring network, to generate and send signals throughout the ring network to switch the configuration of the ring network to at least one linear network.

Abstract: A web handling system is described, including a plurality of web handling controllers and a web handling process logic controller networked to form a ring network. A processor of the web handling process logic controller being configured to determine whether a fault exists within the ring network, and responsive to determining that a fault exists within the ring network, to generate and send signals throughout the ring network to switch the configuration of the ring network to at least one linear network.

Abstract: A handheld computing device is utilized to control operations of an emulator, which is operating on an emulation system. The handheld computing device may be the device being emulated by the emulator or an electronic device emulating the device being emulated. The handheld computing device is communicatively coupled to the emulation system via a wireless or wired communications link. In an embodiment, the handheld computing device is a calculator coupled to a personal computer running an emulator of the calculator. Input entered on the handheld computing device is sent to the emulator, thereby allowing the user of the handheld computing device to remotely control the operation of the emulator. The personal computer may be coupled to a projector such that a group of students may view the emulator.

Abstract: An emulation system that displays a key press history is provided. The emulation system emulates a handheld computing device, such as a calculator, on an electronic device such as a personal computer. A sequence of keystrokes is received by the emulation system, wherein the keystrokes represent input to the handheld computing device being emulated. The keystrokes may represent, for example, digits, commands (e.g., store, recall, graph, list, print, etc.), or functions (e.g., x2, x3, compute, tan, sin, cos, etc.). The sequence of keystrokes is displayed by the emulation system, thereby allowing a student to see the key press history. The keystrokes may be entered on the emulation system, or the emulation system may receive the keystrokes from a communicatively coupled handheld device. The emulation system may include a projector for projecting the display onto a screen or other surface.

Abstract: An emulation system that allows a user to create a script is provided. The emulation system emulates a handheld computing device, such as a calculator, on an electronic device such as a personal computer. The script, which includes an input sequence, may be recorded and played back at a later time. In a preferred embodiment, annotations may be added to the script to help explain the concepts being illustrated by the script. The annotation may include text, graphics, audio, and/or video. Upon playback, the input sequence recorded in the script is used as input to the emulator. The playback may be automated or performed one step at a time, thereby allowing the student to step through the script and study intermediate results. The input sequence may represent, for example, digits, commands (e.g., store, recall, graph, list, print, etc.), or functions (e.g., x2, x3, compute, tan, sin, cos, etc.).