Abstract: When initializing a card-shaped device inserted in a card interface, operation mode acquiring means incorporated in an electronic device acquires operation mode information, stored in a register file incorporated in the card-shaped device, by a predetermined procedure using a predetermined pin. Operation mode setting means incorporated in the electronic device executes signal assignment on a plurality of data pins peculiar to an operation mode indicated by the acquired operation mode information, thereby switching a data transfer width, and allowing the card-shaped device to operate in the operation mode.

Abstract: A portable computer that includes a first ROM for storing an OS, a second ROM for storing at least one piece of existing application software, and a flat display panel for displaying at least one icon to read out the existing application software stored in the second ROM. Since the DOS and the application program are respectively stored in a DOS ROM and an application ROM, the DOS or the application can be quickly executed without install processing from floppy disks.

Abstract: When the MS-DOS is not installed from an FDD or an HDD but is installed from a built-in DOS ROM arranged in a memory space in which bank access to the computer main body can be performed, at the time the system power is turned on, a menu display processing program stored in the DOS ROM is executed by the DOS. Upon execution of the program, the arrangement of menu icons can be arbitrarily changed on the menu screen.

Abstract: A memory address mapping mechanism includes a flip-flop for latching a signal (PROT) representing the real or protective virtual address mode. AN output signal from the flip-flop is supplied to an address decoder. In either the real or protective virtual address mode, the address decoder receives the address signal from a microprocessor and the signal (PROT) from the flip-flop, decodes the address signal so as to obtain a continuous memory address space, and outputs a memory address selection signal.

Abstract: The present invention provides a method of delustering an electrocoated article which comprises dipping an uncured electrocoated article into an aqueous solution of an organic sulfonic acid, and applying electric voltage to the article. Further, the present invention provides a method of controlling the gloss of an electrocoated article which comprises electrocoating an article while applying pulsating electric current voltage, dipping the obtained electrocoated article in an aqueous solution of an organic sulfonic acid in an uncured state, and applying electric voltage to the electrocoated article as anode, wherein certain pulsating ratio at electrocoating is selected. According to the present invention, an even delustered coat having excellent physical properties is obtained. Further, it is possible to deluster the electrocoat to a desirable gloss with eveness.