Abstract: A cart for dispensing, storing, and tracking medical instruments is provided. The cart has a housing, a first motor, a second motor, one or more trays, and a processor. The trays hold one or more medical instruments, and have a door and door opening assembly. The processor is in communication with the motors for rotating the housing and opening the doors. The processor has a storage medium for storing the cart's instrument dispensing history. The processor also has a user interface for capturing user input.

Abstract: A cart for dispensing, storing, and tracking medical instruments is provided. The cart has a housing, a first motor, a second motor, one or more trays, and a processor. The trays hold one or more medical instruments, and have a door and door opening assembly. The processor is in communication with the motors for rotating the housing and opening the doors. The processor has a storage medium for storing the cart's instrument dispensing history. The processor also has a user interface for capturing user input.

Abstract: pH-change sensors and related methods are disclosed. One such sensor may have a first ion-sensitive transistor-operational-transconductance-amplifier (the “first IOTA”) and a second ion-sensitive transistor-operational-transconductance-amplifier (the “second IOTA”). Each IOTA may have an ion-sensitive transistor, a load transistor, and an output. In each IOTA, the drain region of the ion-sensitive transistor may be connected to the drain region of the load transistor. A differential sensor may be connected to the IOTAs, and an output from the differential sensor may indicate a voltage difference between the IOTA outputs. The output from the differential sensor may be used to provide an indication of a change in pH.

Abstract: The invention may be embodied as a glare detection system or as a method of detecting glare. In a system according to the invention, there may be a light receiving surface, a first input channel, a second input channel, a glare signaling circuit and a glare reducing circuit. The first input channel may provide an indication of the amount of light impinging on a first portion of the light receiving surface. The second input channel may provide an indication of the amount of light impinging on a second portion of the light receiving surface. The glare signaling circuit (“GSC”) may have a first input port in communication with the first input channel, a second input port in communication with the second input channel, a logic-or gate capable of producing an output signal when the logic-or gate detects that the first input channel or the second input channel indicates glare on the light receiving surface.