ZA715289B - Data entry device - Google Patents
Data entry deviceInfo
- Publication number
- ZA715289B ZA715289B ZA715289A ZA715289A ZA715289B ZA 715289 B ZA715289 B ZA 715289B ZA 715289 A ZA715289 A ZA 715289A ZA 715289 A ZA715289 A ZA 715289A ZA 715289 B ZA715289 B ZA 715289B
- Authority
- ZA
- South Africa
- Prior art keywords
- data entry
- entry device
- data
- entry
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M11/00—Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys
- H03M11/20—Dynamic coding, i.e. by key scanning
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Input From Keyboards Or The Like (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US7197270A | 1970-09-14 | 1970-09-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA715289B true ZA715289B (en) | 1972-04-26 |
Family
ID=22104765
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA715289A ZA715289B (en) | 1970-09-14 | 1971-08-09 | Data entry device |
Country Status (15)
Country | Link |
---|---|
US (1) | US3675239A (xx) |
AT (1) | AT313608B (xx) |
AU (1) | AU443750B2 (xx) |
BE (1) | BE772502A (xx) |
BR (1) | BR7105984D0 (xx) |
CA (1) | CA923433A (xx) |
CH (1) | CH535458A (xx) |
DE (1) | DE2145119B2 (xx) |
ES (1) | ES394738A1 (xx) |
FR (1) | FR2112956A5 (xx) |
GB (1) | GB1316215A (xx) |
NL (1) | NL178455C (xx) |
NO (1) | NO131956C (xx) |
SE (1) | SE361222B (xx) |
ZA (1) | ZA715289B (xx) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4121284A (en) * | 1972-09-11 | 1978-10-17 | Hyatt Gilbert P | Computerized system for operator interaction |
NL166140C (nl) * | 1970-11-14 | 1981-06-15 | Philips Nv | Toetsenbord. |
USRE31942E (en) * | 1971-03-01 | 1985-07-09 | High speed serial scan and readout of keyboards | |
CA937875A (en) * | 1971-05-19 | 1973-12-04 | M. Bernin Victor | N-key rollover keyboard |
US4517553A (en) * | 1971-05-19 | 1985-05-14 | Illinois Tool Works Inc. | N-Key rollover keyboard |
US3792466A (en) * | 1972-05-31 | 1974-02-12 | Mos Technology Inc | Keyboard entry system with n-key rollover and n-key lockout protection |
US3786497A (en) * | 1972-07-31 | 1974-01-15 | Ibm | Matrix keyboard method and apparatus |
US3921166A (en) * | 1972-09-15 | 1975-11-18 | Raytheon Co | Capacitance matrix keyboard |
US3825926A (en) * | 1973-02-05 | 1974-07-23 | Ibm | Interfacing circuitry for connecting a remote keyboard with a data receiving buffer |
US3886543A (en) * | 1973-11-29 | 1975-05-27 | Teletype Corp | Debounce logic for keyboard |
JPS5086929A (xx) * | 1973-11-30 | 1975-07-12 | ||
US3995252A (en) * | 1973-12-26 | 1976-11-30 | General Electric Company | Data processing arrangement for printers |
JPS5187917A (xx) * | 1975-01-31 | 1976-07-31 | Hitachi Ltd | |
US4042777A (en) * | 1975-10-06 | 1977-08-16 | International Business Machines Corporation | One-handed keyboard and its control means |
US4106011A (en) * | 1975-10-24 | 1978-08-08 | Tektronix, Inc. | Keyboard circuit |
US4024534A (en) * | 1975-11-24 | 1977-05-17 | Xerox Corporation | Keyboard encoding with repeat key pause |
US4164666A (en) * | 1976-06-08 | 1979-08-14 | Toyko Shibaura Electric Co., Ltd. | Electronic apparatus using complementary MOS transistor dynamic clocked logic circuits |
US4211915A (en) * | 1978-12-04 | 1980-07-08 | General Electric Company | Keyboard verification system |
US4684934A (en) * | 1983-02-28 | 1987-08-04 | Data General Corporation | Method and apparatus for storing and retrieving keyboard LED data |
ES2040172B1 (es) * | 1991-12-31 | 1994-05-01 | Alcatel Standard Electrica | Procedimiento y dispositivo para la lectura de teclados. |
US5889236A (en) * | 1992-06-08 | 1999-03-30 | Synaptics Incorporated | Pressure sensitive scrollbar feature |
US5880411A (en) | 1992-06-08 | 1999-03-09 | Synaptics, Incorporated | Object position detector with edge motion feature and gesture recognition |
US5861583A (en) * | 1992-06-08 | 1999-01-19 | Synaptics, Incorporated | Object position detector |
DE69324067T2 (de) * | 1992-06-08 | 1999-07-15 | Synaptics Inc | Objekt-Positionsdetektor |
US6028271A (en) * | 1992-06-08 | 2000-02-22 | Synaptics, Inc. | Object position detector with edge motion feature and gesture recognition |
US6239389B1 (en) | 1992-06-08 | 2001-05-29 | Synaptics, Inc. | Object position detection system and method |
US6380929B1 (en) | 1996-09-20 | 2002-04-30 | Synaptics, Incorporated | Pen drawing computer input device |
US5854625A (en) * | 1996-11-06 | 1998-12-29 | Synaptics, Incorporated | Force sensing touchpad |
CN108880560B (zh) * | 2016-01-05 | 2022-03-18 | 湖南工业大学 | 一种矩阵式键盘反转法扫描电路 |
CN105680875B (zh) * | 2016-01-05 | 2018-07-24 | 湖南工业大学 | 矩阵式键盘操作识别及编码电路 |
CN105680873B (zh) * | 2016-01-05 | 2018-06-26 | 湖南工业大学 | 独立式键盘扫描编码电路 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1060878A (en) * | 1965-06-18 | 1967-03-08 | Creed & Co Ltd | Code generating keyboards |
US3308918A (en) * | 1965-09-20 | 1967-03-14 | Ibm | Pseudo-interlock employing strobe signal with selected keys |
US3568183A (en) * | 1968-07-09 | 1971-03-02 | Gen Electric | Keyboard synchronized toned generator |
-
1970
- 1970-09-14 US US71972A patent/US3675239A/en not_active Expired - Lifetime
-
1971
- 1971-08-05 GB GB3682071A patent/GB1316215A/en not_active Expired
- 1971-08-09 ZA ZA715289A patent/ZA715289B/xx unknown
- 1971-08-13 AU AU32321/71A patent/AU443750B2/en not_active Expired
- 1971-08-25 SE SE10762/71A patent/SE361222B/xx unknown
- 1971-09-02 ES ES394738A patent/ES394738A1/es not_active Expired
- 1971-09-06 NO NO3317/71A patent/NO131956C/no unknown
- 1971-09-09 DE DE19712145119 patent/DE2145119B2/de active Granted
- 1971-09-13 BE BE772502A patent/BE772502A/xx not_active IP Right Cessation
- 1971-09-13 FR FR7132868A patent/FR2112956A5/fr not_active Expired
- 1971-09-13 BR BR5984/71A patent/BR7105984D0/pt unknown
- 1971-09-13 CA CA122709A patent/CA923433A/en not_active Expired
- 1971-09-14 AT AT796071A patent/AT313608B/de not_active IP Right Cessation
- 1971-09-14 CH CH1340571A patent/CH535458A/de not_active IP Right Cessation
- 1971-09-14 NL NLAANVRAGE7112625,A patent/NL178455C/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
NO131956B (xx) | 1975-05-20 |
US3675239A (en) | 1972-07-04 |
NL7112625A (xx) | 1972-03-16 |
DE2145119C3 (xx) | 1973-10-11 |
BR7105984D0 (pt) | 1973-04-10 |
AU3232171A (en) | 1973-02-15 |
ES394738A1 (es) | 1974-10-01 |
AU443750B2 (en) | 1974-01-03 |
CH535458A (de) | 1973-03-31 |
NO131956C (xx) | 1975-08-27 |
BE772502A (fr) | 1972-01-17 |
NL178455C (nl) | 1986-03-17 |
GB1316215A (en) | 1973-05-09 |
DE2145119B2 (de) | 1973-03-22 |
AT313608B (de) | 1974-02-25 |
NL178455B (nl) | 1985-10-16 |
DE2145119A1 (de) | 1972-03-23 |
SE361222B (xx) | 1973-10-22 |
CA923433A (en) | 1973-03-27 |
FR2112956A5 (xx) | 1972-06-23 |
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