JPS5576423A - Electronic apparatus - Google Patents
Electronic apparatusInfo
- Publication number
- JPS5576423A JPS5576423A JP15070978A JP15070978A JPS5576423A JP S5576423 A JPS5576423 A JP S5576423A JP 15070978 A JP15070978 A JP 15070978A JP 15070978 A JP15070978 A JP 15070978A JP S5576423 A JPS5576423 A JP S5576423A
- Authority
- JP
- Japan
- Prior art keywords
- input
- bfr2
- key
- time
- bfr4
- 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
- Input From Keyboards Or The Like (AREA)
- Information Transfer Systems (AREA)
- Calculators And Similar Devices (AREA)
Abstract
PURPOSE: To decrease the input process exclusive time of the CPU at the key input time for the electronic desk computer by making the input buffer register (RFR) function as also the input/output BFR.
CONSTITUTION: The code of key 1 is received at input BFR2, and input buffer pointer 8 receives +8 every reception of the code at BFR2, and then the address is shown for the address of BFR2 to be taken in next at the key input time. Now if the switch control signal between input BFR2 and output BFR4 which is delivered from CPU3 indicates BFR4, AND gate 4 opens to send the contents of BFR4 to output device 5. At the same time, CPU3 detects the key input, and the control signal is sent so that device 5 is connected to BFR2 via control line 7. Thus AND gate 4A closes with gate 2A opened, and the contents of BFR2 is delivered to device 5. As a result, the exclusive time for the CPU's key the process of which is required with every key input can be decreased greatly.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15070978A JPS5576423A (en) | 1978-12-05 | 1978-12-05 | Electronic apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15070978A JPS5576423A (en) | 1978-12-05 | 1978-12-05 | Electronic apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5576423A true JPS5576423A (en) | 1980-06-09 |
Family
ID=15502685
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15070978A Pending JPS5576423A (en) | 1978-12-05 | 1978-12-05 | Electronic apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5576423A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4979731A (en) * | 1972-12-08 | 1974-08-01 | ||
JPS50159638A (en) * | 1974-06-12 | 1975-12-24 |
-
1978
- 1978-12-05 JP JP15070978A patent/JPS5576423A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4979731A (en) * | 1972-12-08 | 1974-08-01 | ||
JPS50159638A (en) * | 1974-06-12 | 1975-12-24 |
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