Abstract: A dot-matrix display apparatus includes an address conversion/switch circuit which converts a system address of 16 bits outputted from a CPU into a write address in a manner that a most significant bit of the system address becomes a least significant bit of the write address and remaining bits of the system address are shifted upward one by one bit so as to become remaining bits of the write address. The upper 8 bits of the write address becomes a Y address for designating a row of a VRAM and the lower 8 bits of the write address becomes an X address for designating a column of the VRAM. Display data are written in the VRAM in a manner that display data for an upper half of a screen of an LCD and display data for a lower half thereof are in a row one after the other.

Abstract: A display panel and an information machine including the display panel, include a display panel unit having a display screen, and an inner cover for covering the inside of the display panel unit. A pair of metal fittings are screwed to side end portions of the display panel unit. In addition, an outer cover is provided for covering the outside of the display panel unit, where the outer cover and the display panel unit are both separately connected to the inner cover, so that the outer cover can be removed while leaving the display panel unit attached to the inner cover. Since the entire back surface of the display panel unit is exposed merely by removing the outer cover, the inspection and repair of the display panel unit is facilitated.