JPS564836A - Transfer and control system for display data - Google Patents
Transfer and control system for display dataInfo
- Publication number
- JPS564836A JPS564836A JP7878979A JP7878979A JPS564836A JP S564836 A JPS564836 A JP S564836A JP 7878979 A JP7878979 A JP 7878979A JP 7878979 A JP7878979 A JP 7878979A JP S564836 A JPS564836 A JP S564836A
- Authority
- JP
- Japan
- Prior art keywords
- transfer
- output
- display data
- disp
- circuit
- 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.)
- Granted
Links
Landscapes
- Calculators And Similar Devices (AREA)
- Digital Computer Display Output (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
PURPOSE: To perform efficient data transfer by switching the rotation number of the driven timing signal, in operational processing and display data transfer.
CONSTITUTION: When the display data transfer instruction DISP output from the instruction decoder 10 is at 0, the gate of the AND circuit 18 of the timing signal generating circuit 12 is closed to output only the timing signals t1, t2, t3 and not to output t23. Further, the data read-out for the operating register is made in RAM3 at t1, data read-out for operated register is made at time t2, and the result of operation is written in operated register at t3. At the transfer of display data, DISP from the decoder 10 becomes 1 to output the signals t1, t2, t3, t23 from the circuit 12 and one cycle is sectioned into four. DISP is input to the AND circuits 28, 29 only while the delay circuit 31 is in operation, and the displayed data is sequentially output via the transfer gates 30, 30a in the timing of t32, t3, t1, t2.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7878979A JPS564836A (en) | 1979-06-22 | 1979-06-22 | Transfer and control system for display data |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7878979A JPS564836A (en) | 1979-06-22 | 1979-06-22 | Transfer and control system for display data |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS564836A true JPS564836A (en) | 1981-01-19 |
JPS6212527B2 JPS6212527B2 (en) | 1987-03-19 |
Family
ID=13671640
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7878979A Granted JPS564836A (en) | 1979-06-22 | 1979-06-22 | Transfer and control system for display data |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS564836A (en) |
-
1979
- 1979-06-22 JP JP7878979A patent/JPS564836A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6212527B2 (en) | 1987-03-19 |
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