JPS56145419A - Cursor control system of crt display device - Google Patents
Cursor control system of crt display deviceInfo
- Publication number
- JPS56145419A JPS56145419A JP4861980A JP4861980A JPS56145419A JP S56145419 A JPS56145419 A JP S56145419A JP 4861980 A JP4861980 A JP 4861980A JP 4861980 A JP4861980 A JP 4861980A JP S56145419 A JPS56145419 A JP S56145419A
- Authority
- JP
- Japan
- Prior art keywords
- cursor
- control
- request
- pushed
- cpu
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To shorten the movement time of a cursor and to simplify movement control by providing four control keys for moving the cursor vertically and horizontally and a control key for varying the moving speed of the cursor.
CONSTITUTION: When at least one of control keys K1WK5 is pushed, a request for an interruption it sent to CPU, which jumps immediately to a timer interruption routine. Then, when acceleration control key K5 is pushed, data of short-period unit distance movement time is written in timer TM, which subtracts the data of written period time and, when data reaches "0", sends a request for an interrupt to CPU. In response to the request, CPU reads a key input from keyboard KB and moves the cursor continuously while control keys K1WK4 are selectively pushed, thereby completing the cursor movement control via the interruption routine.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4861980A JPS56145419A (en) | 1980-04-15 | 1980-04-15 | Cursor control system of crt display device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4861980A JPS56145419A (en) | 1980-04-15 | 1980-04-15 | Cursor control system of crt display device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56145419A true JPS56145419A (en) | 1981-11-12 |
Family
ID=12808417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4861980A Pending JPS56145419A (en) | 1980-04-15 | 1980-04-15 | Cursor control system of crt display device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56145419A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01175020U (en) * | 1988-05-31 | 1989-12-13 | ||
US5432530A (en) * | 1991-05-15 | 1995-07-11 | Fujitsu Limited | Pointing device and method of control of same |
US5963195A (en) * | 1996-12-19 | 1999-10-05 | International Business Machines Corporation | Hardware-selectable mouse movement |
-
1980
- 1980-04-15 JP JP4861980A patent/JPS56145419A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01175020U (en) * | 1988-05-31 | 1989-12-13 | ||
JPH057767Y2 (en) * | 1988-05-31 | 1993-02-26 | ||
US5432530A (en) * | 1991-05-15 | 1995-07-11 | Fujitsu Limited | Pointing device and method of control of same |
US5963195A (en) * | 1996-12-19 | 1999-10-05 | International Business Machines Corporation | Hardware-selectable mouse movement |
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