Abstract: A method and apparatus includes a portable electronic memory storage device and a plurality of exhibitor computers, each having at least one specifically identified electronic uploadable file and a port adapted to selectively interface with the portable device. When a portable device engages a port, electronic content corresponding to the port is uploaded from the computer to the portable device. In another embodiment, data from the portable device, such as demographic data, is also downloaded to the exhibitor computer.

Abstract: A system and method for monitoring and responding to device conditions is provided. A content server monitors sensed conditions of a device. Upon detection of an action-triggering condition, such as an error in the device, the content server accessed databases containing information pertaining to the monitored device in order to determine the nature of the error. When the error is identified, a database including a library of instructional content is accessed and the content server selects appropriate instructional content to enable a user to resolve the issue that prompted the error condition. Once the content server has chosen the correct instructional media, the content is delivered to a device client comprising a display screen at or adjacent the monitored device. Preferably, the instructional media comprises full motion video so that the device user simply copies what is seen on the display in order to resolve the issue.

Abstract: Apparatus and for providing controlled addition of a first aqueous solution having a first concentration of an aqueous chemical species at a first flow rate to a second aqueous solution having a second flow rate to provide a diluted first solution of a desired selected concentration of the chemical species, the apparatus having a second solution sensor to obtain data on the second solution selected from the second flow rate and the temperature of the second solution; a first solution sensor to obtain data on the temperature of the first solution; a pump to effect addition of the first solution to the second solution to provide the diluted first solution; and a CPU (i) to receive the data selected from the second flow rate and temperature data from the second solution sensor; (ii) to receive the temperature sensing data on the first solution from the first solution sensor; (iii) to effect algorithmic treatment of the data from the first and second sensor, to provide pump control data; and (iv) to control the p