Abstract: Technologies are described for customizable and shared theme management A theme and layout configuration may be provided to a meeting room management device through a shared location such as a shared network storage or manually through a configuration user interface presented by the meeting room management device to allow selection and customization of a theme, a layout of user interface elements, and/or a location of the user interface elements for multiple display devices associated with the meeting room management device. The theme, layout of the user interface elements, and/or location of the user interface elements for each of the display devices may be presented through the configuration, user interface to allow users to see how selected options may be seen on different devices. The theme, layout of the user interface elements, and/or location of the user interface elements may be deployed to each of the display devices.

Abstract: A programmable controller of the type used to solve relay ladder diagrams is taught. The programmable controller includes a line solver which has as a part thereof relatively simple low capacity shift register memories for storing interim intercontact node power status information without necessitating the use of a separate large capacity remotely located memory within the programmable controller. Because of the presence of left and right node shift registers as storage devices in the line solver, the line solver may be used to provide an ultimate solution for even a complex rung of a ladder diagram by utilizing only one line solver operation per each entered contact or device. No extra line solver operations are required for intercontact connections nor for transferring information between the line solver and the main memory on an interim solution basis other than to take input information from the main memory and to provide final output information to the main memory.