| 摘要 |
<p>PURPOSE:To attain automatically the screen address designation at each line at the multistage display, by providing a display control function section containing the mode discrimination of multistage and the screen address control of the mode, for a display controlling device. CONSTITUTION:Various address register sections TZAA for multistage display control are assigned to a part of an RAM in a CRT display control and a keyboard input device CRT/KB controller. Address registers 201AS, 201AE, 201BS and 201BE of the TZAA store each digital address of the left end digit and the right end digit of a paper-tablet shaped areas A, B on the display screen. Address registers 202S, 202E of a register TZBA store the content of the register TZAA of the area in which write is done, and store the next write position to an address register 203 of a register TZCA. The screen address designation of each digit is done automatically with those registers.</p> |
