JPS5545471Y2 - - Google Patents
Info
- Publication number
- JPS5545471Y2 JPS5545471Y2 JP1975045617U JP4561775U JPS5545471Y2 JP S5545471 Y2 JPS5545471 Y2 JP S5545471Y2 JP 1975045617 U JP1975045617 U JP 1975045617U JP 4561775 U JP4561775 U JP 4561775U JP S5545471 Y2 JPS5545471 Y2 JP S5545471Y2
- Authority
- JP
- Japan
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/22—Means for limiting or controlling the pin/gate ratio
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
- G06F3/023—Arrangements for converting discrete items of information into a coded form, e.g. arrangements for interpreting keyboard generated codes as alphanumeric codes, operand codes or instruction codes
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Input From Keyboards Or The Like (AREA)
- Calculators And Similar Devices (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1975045617U JPS5545471Y2 (US20110158925A1-20110630-C00042.png) | 1975-04-03 | 1975-04-03 | |
| US05/672,277 US4064399A (en) | 1975-04-03 | 1976-03-31 | Electronic calculator having keyboard for entering data |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1975045617U JPS5545471Y2 (US20110158925A1-20110630-C00042.png) | 1975-04-03 | 1975-04-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS51129027U JPS51129027U (US20110158925A1-20110630-C00042.png) | 1976-10-18 |
| JPS5545471Y2 true JPS5545471Y2 (US20110158925A1-20110630-C00042.png) | 1980-10-24 |
Family
ID=12724329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1975045617U Expired JPS5545471Y2 (US20110158925A1-20110630-C00042.png) | 1975-04-03 | 1975-04-03 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4064399A (US20110158925A1-20110630-C00042.png) |
| JP (1) | JPS5545471Y2 (US20110158925A1-20110630-C00042.png) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5635860Y2 (US20110158925A1-20110630-C00042.png) * | 1976-05-27 | 1981-08-24 | ||
| JPS52149029A (en) * | 1976-06-04 | 1977-12-10 | Seiko Epson Corp | Keyboard |
| US4320386A (en) * | 1980-07-30 | 1982-03-16 | General Electric Company | Selection and power reset circuit |
| JPS5746930U (US20110158925A1-20110630-C00042.png) * | 1980-08-29 | 1982-03-16 | ||
| EP0094130B1 (en) * | 1982-05-07 | 1987-01-21 | Philips Electronics Uk Limited | Data entry keyboard apparatus |
| US5900829A (en) * | 1996-07-23 | 1999-05-04 | Motorola, Inc. | Method of and apparatus for detecting key actuations |
| US5798716A (en) * | 1996-08-23 | 1998-08-25 | Motorola, Inc. | Method and apparatus for detecting key actuations |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4918427A (US20110158925A1-20110630-C00042.png) * | 1972-06-09 | 1974-02-18 | ||
| JPS49106727A (US20110158925A1-20110630-C00042.png) * | 1973-01-19 | 1974-10-09 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3597600A (en) * | 1969-05-05 | 1971-08-03 | Singer Co | Electronic desk top calculator having a dual function keyboard logic means |
| US3715746A (en) * | 1971-03-10 | 1973-02-06 | Omron Tateisi Electronics Co | Keyboard input device |
| US3762637A (en) * | 1971-08-05 | 1973-10-02 | Scm Corp | Dual-function keys for sign change and correction of erroneous entries |
| JPS5230809B2 (US20110158925A1-20110630-C00042.png) * | 1971-09-13 | 1977-08-10 | ||
| US3892958A (en) * | 1974-01-11 | 1975-07-01 | Hewlett Packard Co | Inverse/complementary function prefix key |
-
1975
- 1975-04-03 JP JP1975045617U patent/JPS5545471Y2/ja not_active Expired
-
1976
- 1976-03-31 US US05/672,277 patent/US4064399A/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4918427A (US20110158925A1-20110630-C00042.png) * | 1972-06-09 | 1974-02-18 | ||
| JPS49106727A (US20110158925A1-20110630-C00042.png) * | 1973-01-19 | 1974-10-09 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS51129027U (US20110158925A1-20110630-C00042.png) | 1976-10-18 |
| US4064399A (en) | 1977-12-20 |
