Abstract:
According to one embodiment, a nonvolatile semiconductor memory device includes a case, a memory in the case, a controller in the case. The controller controls the memory. First information including a determination code is printed on a surface of the case with invisible ink. Second information related to the nonvolatile semiconductor memory device is printed with visible ink which is visually recognizable in a visible light range.
Abstract:
According to one embodiment, a semiconductor device includes a board, a controller chip, a semiconductor chip, a sealing portion, and a component. The board includes a first surface and a second surface opposite to the first surface, the first surface comprising a terminal. The controller chip is on the second surface of the board. The semiconductor chip is on the second surface of the board. The sealing portion integrally covers the controller chip and the semiconductor chip and does not cover a region of the second surface of the board. The component is on the region of the second surface of the board to perform an operation with respect to the outside of the semiconductor device.
Abstract:
According to one embodiment, a USB memory device includes: a substrate including a semiconductor chip, a plurality of operating terminals, a reference potential terminal and a reference potential wiring; and a housing holding the substrate inside, being electrically connected to the reference potential terminal, and having electric conductivity. The reference potential wiring electrically connects the operating terminal with the reference potential terminal.
Abstract:
According to one embodiment, a memory card includes a housing and a switch. The housing includes a first surface and a second surface. The second surface is opposite to the first surface. The switch includes a first part, a second part, and a third part. The first part is disposed outside from the housing. The third part is disposed in the housing. The second part is connected to both the first part and the third part. The third part is in contact with both the first surface and the second surface.