JPS5663640A - Display system of electronic apparatus - Google Patents
Display system of electronic apparatusInfo
- Publication number
- JPS5663640A JPS5663640A JP13848379A JP13848379A JPS5663640A JP S5663640 A JPS5663640 A JP S5663640A JP 13848379 A JP13848379 A JP 13848379A JP 13848379 A JP13848379 A JP 13848379A JP S5663640 A JPS5663640 A JP S5663640A
- Authority
- JP
- Japan
- Prior art keywords
- indicator
- display
- minus
- signal
- data
- 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
Landscapes
- Calculators And Similar Devices (AREA)
- Digital Computer Display Output (AREA)
Abstract
PURPOSE: To make it possible to exactly display a negative number without decreasing the number of display digits, by applying a blanking signal which turns on and off at a constant period, to the indicator, and displaying the display result by means of flickering, in case when the operation result is minus.
CONSTITUTION: CPU1 executes the arithmetic operation in accordance with operation of the input key, being based on the data stored in RAM2 and RAM3, and stores the obtained operation data in the display buffer 5. The stored data is displayed on the indicator 4. Moreover, CPU1 decodes the address, and inputs it to the clock input of FF7 through the signal line 9. When the operation result is plus, a signal is not generated in the signal line 9, but when it is minus, a clock signal which repeats inversion at a prescribed period appears. An output of FF7 executes blanking to the indicator 4 through the inverter 6, a data displayed on the indicator 4 is displayed by means of flickering at a constant period, and it is shown that the operation result is minus.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13848379A JPS5663640A (en) | 1979-10-26 | 1979-10-26 | Display system of electronic apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13848379A JPS5663640A (en) | 1979-10-26 | 1979-10-26 | Display system of electronic apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5663640A true JPS5663640A (en) | 1981-05-30 |
Family
ID=15223130
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13848379A Pending JPS5663640A (en) | 1979-10-26 | 1979-10-26 | Display system of electronic apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5663640A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6454148U (en) * | 1987-09-26 | 1989-04-04 |
-
1979
- 1979-10-26 JP JP13848379A patent/JPS5663640A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6454148U (en) * | 1987-09-26 | 1989-04-04 | ||
JPH0537309Y2 (en) * | 1987-09-26 | 1993-09-21 |
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