Abstract: The present invention provides a DAC constructed from a series of floating gate devices which are programmable to a series of predetermined values. Addressing one or more of the programmed floating gate devices will select from a wide variety of analog outputs. Reprogramming the floating gate devices, can provide a different variety of analog outputs. For example, the floating gate devices can be preprogrammed to a different range of outputs matching a range of perceptible signals.

Abstract: The invention is a method of automatically adjusting an electrode array to the neural characteristics of an individual subject. The response to electrical neural stimulation varies from subject to subject. Measure of impedance may be used to predict the electrode height from the neural tissue and, thereby, predict the threshold of perception. Alternatively, electrode height may be measured directly to predict the threshold of perception. Also, impedance measurement may be used to quickly identify defective electrodes and proper electrode placement.

Abstract: The present invention provides a DAC constructed from a series of floating gate devices which are programmable to a series of predetermined values. Addressing one or more of the programmed floating gate devices, will select from a wide variety of analog outputs. Reprogramming the floating gate devices, can provide a different variety of analog outputs. For example, the floating gate devices can be preprogrammed to a different range of outputs matching a range of perceptible signals.

Abstract: The present invention provides a DAC constructed from a series of floating gate devices which are programmable to a series of predetermined values. Addressing one or more of the programmed floating gate devices, will select from a wide variety of analog outputs. Reprogramming the floating gate devices, can provide a different variety of analog outputs. For example, the floating gate devices can be preprogrammed to a different range of outputs matching a range of perceptible signals.

Abstract: The present invention provides a DAC constructed from a series of floating gate devices which are programmable to a series of predetermined values. Addressing one or more of the programmed floating gate devices, will select from a wide variety of analog outputs. Reprogramming the floating gate devices, can provide a different variety of analog outputs. For example, the floating gate devices can be preprogrammed to a different range of outputs matching a range of perceptible signals.

Abstract: A method for controlling building interior air pressure that is different from external environment air pressure, wherein the internal and external air pressure difference can be significantly large. The internal and external air pressure difference is maintained through partitioning the internal airway using permeable porous walls. A method for building the permeable porous walls using unit permeable porous blocks including boxes of granular particulates is provided to ease not only the installation but also the repair and replacement of the permeable porous walls, and also to maximize the reusability of the materials used to build the walls.

Abstract: The present invention provides a DAC constructed from a series of floating gate devices which are programmable to a series of predetermined values. Addressing one or more of the programmed floating gate devices, will select from a wide variety of analog outputs. Reprogramming the floating gate devices, can provide a different variety of analog outputs. For example, the floating gate devices can be preprogrammed to a different range of outputs matching a range of perceptible signals.