Abstract: A computing-in-memory apparatus is provided, which includes a voltage regulator having an amplifier and a reference current source, a computing-in-memory array having a plurality of computing units and a detection circuit connected to each other. The amplifier has a current input and a voltage output and is connected to the reference current source, and the voltage regulator provides an output voltage for supplying to the computing-in-memory array. An output current of the detection circuit is inputted into the voltage regulator to compare with the reference current source of the voltage regulator, and then a negative feedback convergence or a negative feedback mechanism is executed according to the comparison result to regulate the output voltage supplied by the voltage regulator to the computing-in-memory array.

Abstract: The present invention discloses an XY platform device with nanoscale precision including an optical pickup head for focusing and seeking the tracks of an optical data storage medium; a servo device for driving the optical pickup head to move in focusing and radial directions; a carrier platform for receiving a testing object thereon and providing a connecting member to be connected with the optical pickup head. With the focusing and radial movements of the optical pickup head, the carrier platform is driven to move accordingly, and thus achieving the high-precision and low-cost effects.

Abstract: The present invention discloses an XY platform device with nanoscale precision including an optical pickup head for focusing and seeking the tracks of an optical data storage medium; a servo device for driving the optical pickup head to move in focusing and radial directions; a carrier platform for receiving a testing object thereon and providing a connecting member to be connected with the optical pickup head. With the focusing and radial movements of the optical pickup head, the carrier platform is driven to move accordingly, and thus achieving the high-precision and low-cost effects.