JPS5597637A - Interface circuit for character/pattern display unit - Google Patents
Interface circuit for character/pattern display unitInfo
- Publication number
- JPS5597637A JPS5597637A JP306179A JP306179A JPS5597637A JP S5597637 A JPS5597637 A JP S5597637A JP 306179 A JP306179 A JP 306179A JP 306179 A JP306179 A JP 306179A JP S5597637 A JPS5597637 A JP S5597637A
- Authority
- JP
- Japan
- Prior art keywords
- display
- data
- character
- terminal
- reset
- 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 prevent the display of the insignificant patterns by inhibiting the video signals for the reset preparatory period during which the power supply is made and the CPU executes the program.
CONSTITUTION: The data of display RAM8 are read out in sequence based on the addresses produced through synchronous signal/display address generation circuit 6 and then supplied to character generator 9. Then the character code which means the supplied data is converted within generator 9 into the parallel data corresponding to the character pattern, and the parallel data is drawn in when the S/L terminal of shift register 24 in parallel-serial conversion circuit 10 features "L" and then delivered through output terminal 25 for the period of "H" and via the rise of the clock entering the CK terminal. Here, when clear terminal 28 features "L", the output data becomes "L" regardless of the input data. Thus the display can be avoided for the insignificant patterns by inhibiting the video signals for the reset preparatory period during which the reset signal gives the power supply make and then the CPU executes the program.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP306179A JPS5597637A (en) | 1979-01-17 | 1979-01-17 | Interface circuit for character/pattern display unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP306179A JPS5597637A (en) | 1979-01-17 | 1979-01-17 | Interface circuit for character/pattern display unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5597637A true JPS5597637A (en) | 1980-07-25 |
Family
ID=11546803
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP306179A Pending JPS5597637A (en) | 1979-01-17 | 1979-01-17 | Interface circuit for character/pattern display unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5597637A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60216387A (en) * | 1984-04-12 | 1985-10-29 | 日本電気株式会社 | Fluorescent indicator tube display unit |
JPS63192828U (en) * | 1987-05-29 | 1988-12-12 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52153351A (en) * | 1976-06-15 | 1977-12-20 | Sharp Corp | Automatic clearing device |
-
1979
- 1979-01-17 JP JP306179A patent/JPS5597637A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52153351A (en) * | 1976-06-15 | 1977-12-20 | Sharp Corp | Automatic clearing device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60216387A (en) * | 1984-04-12 | 1985-10-29 | 日本電気株式会社 | Fluorescent indicator tube display unit |
JPS63192828U (en) * | 1987-05-29 | 1988-12-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS53120158A (en) | Power source control system | |
JPS5395528A (en) | Character display unit | |
JPS5597637A (en) | Interface circuit for character/pattern display unit | |
JPS54109872A (en) | Pla system of electronic type multifunction watch | |
JPS54122026A (en) | Pattern display system | |
JPS5475226A (en) | Character pattern generator | |
JPS5438726A (en) | Display unit | |
JPS556618A (en) | Display unit | |
JPS5563446A (en) | Clock control system in board inspection | |
JPS5438732A (en) | Input/output order accepting system | |
JPS51129141A (en) | Character enlargement display system | |
JPS5495126A (en) | Display device | |
JPS53132227A (en) | Output unit for video data | |
JPS5374326A (en) | Display unit | |
JPS5539986A (en) | Character reading device | |
JPS5572261A (en) | Logic unit | |
JPS5582349A (en) | Display control system | |
JPS52144230A (en) | C-mos initial reset circuit | |
JPS55129832A (en) | Digital control circuit | |
JPS5413213A (en) | Pattern generating circuit | |
JPS53115148A (en) | Interruption control system | |
JPS52142433A (en) | Display device | |
JPS5561842A (en) | Character display unit | |
JPS5361930A (en) | Synchronization system for non-synchronous signal | |
JPS51139226A (en) | Logic means diagnosis circuit |