Abstract: A support device has a planar base that is positioned under the legs of a user and on top of the surface of the chair, when a user is in a seated position. An adjustable tube connects the base to an adjustable joint, with a platform on the opposing side of the adjustable joint. The adjustable joint provides position adjustments to the platform in the orientations of pitch, roll, and yaw. The adjustable tube allows the distance from the base to the platform to change. The device supports the weight of an instrument which may be placed on the platform.

Abstract: A support device has a planar base that is positioned under the legs of a user and on top of the surface of the chair, when a user is in a seated position. An adjustable tube connects the base to an adjustable joint, with a platform on the opposing side of the adjustable joint. The adjustable joint provides position adjustments to the platform in the orientations of pitch, roll, and yaw. The adjustable tube allows the distance from the base to the platform to change. The device supports the weight of an instrument which may be placed on the platform.

Abstract: A random access memory including input pads and a test circuit. The input pads are configured to receive a row address and a column address. The test circuit is configured to receive the row address and the column address via the input pads and to receive mask bits. The test circuit selects bits of the row address and the column address based on the mask bits and provides at least one test data bit based on the selected bits of the row address and the column address.