Abstract: A mouse body is formed with a first slot from which a first storage medium is inserted or ejected, and a second slot from which a second storage medium is inserted or ejected. A board member is provided within the body. A first interface is formed on a first main face of the board member to communicate data with the first storage medium. A second interface is formed on a second main face of the board member to communicate data with the second storage medium.

Abstract: In a mouse having two click switches with buttons, a motion detector and an additional control switch mechanism for a function of scrolling are provided. The additional control switch mechanism includes a first, a second, and a third switch for producing an up-scroll signal, a down-scroll signal, and a scroll mode selection signal, respectively when being actuated. A single actuator rod having a top push button is disposed to be able to incline opposite directions to selectively actuate the first and second switches and to be pushed down to actuate the third switch. The top push button is disposed between the click switch buttons. Alternatively, the third switch with a push button thereof is disposed at a sidewall of the mouse. In another arrangement, the third switch and the push button thereof are disposed between the two click switch mechanisms, and the first switch a push button thereof and the second switch with a push button thereof are disposed in a sidewall of the mouse.

Abstract: A disc drive is constructed from a main body which includes a mechanism unit having a disc rotating mechanism for rotating a disc and a play back mechanism for playing back information recorded on the disc, disc tray movably provided with respect to the main body for supporting a disc and a casing for housing the main body. The disc drive is provided with vibration absorbing members for suppressing transmission of vibration caused by high speed rotation of the disc from the main body to the casing. The vibration absorbing members are formed of elastical members and they are arranged between the side portions of the main body and the inside of the casing, thereby the main body is supported by the casing through the vibration absorbing members to prevent vibrations caused in the main body from being transmitted to the casing.

Abstract: A grouping device comprises a register table and a grouping unit the register table having m registers corresponding to m groups, each register including an n-bits data storing portion corresponding to the n input signals, for registering relationships between the n input signals and the m groups, the grouping unit receiving grouping signals output from the register table and the n input signals, for selecting one group from the m groups for each input signal and grouping each input signal into the selected group in accordance with the register table. Therefore, the register access time is shortened and the confirmation of the contents of the register by the CPU is made easier.

Abstract: An interrupt processing method and an interrupt processing apparatus provides an end indicative information storing unit for storing an end indicative information of a daisy chain for at least one of a plurality peripheral units, the peripheral unit receiving the indicative information when the peripheral unit receives an acknowledge signal but does not output a request signal, and the peripheral unit outputs a specific chain end state signal to the central processing unit, so that the central processing unit is returned from a response waiting state. Therefore, when an error request signal is produced by noise, etc., delay at a central processing unit is reduced. Further, the daisy chain connection is cut at an optional portion and a request signal from an irrevelant peripheral unit is ignored, so that the efficiency of the processing is improved.