IT944874B - IMPROVEMENT IN THE KEYPAD SETTINGS AND IN THE TRODUCTION OF DATA FOR EXAMPLE IN ELECTRONIC CALCULATORS - Google Patents
IMPROVEMENT IN THE KEYPAD SETTINGS AND IN THE TRODUCTION OF DATA FOR EXAMPLE IN ELECTRONIC CALCULATORSInfo
- Publication number
- IT944874B IT944874B IT54016/71A IT5401671A IT944874B IT 944874 B IT944874 B IT 944874B IT 54016/71 A IT54016/71 A IT 54016/71A IT 5401671 A IT5401671 A IT 5401671A IT 944874 B IT944874 B IT 944874B
- Authority
- IT
- Italy
- Prior art keywords
- troduction
- improvement
- data
- electronic calculators
- keypad
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Input From Keyboards Or The Like (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7016723.A NL166140C (en) | 1970-11-14 | 1970-11-14 | KEYBOARD. |
Publications (1)
Publication Number | Publication Date |
---|---|
IT944874B true IT944874B (en) | 1973-04-20 |
Family
ID=19811565
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT54016/71A IT944874B (en) | 1970-11-14 | 1971-11-11 | IMPROVEMENT IN THE KEYPAD SETTINGS AND IN THE TRODUCTION OF DATA FOR EXAMPLE IN ELECTRONIC CALCULATORS |
Country Status (9)
Country | Link |
---|---|
US (1) | US3750160A (en) |
JP (1) | JPS5315336B1 (en) |
AT (1) | AT324021B (en) |
BE (1) | BE775310A (en) |
CA (1) | CA925794A (en) |
CH (1) | CH538156A (en) |
GB (1) | GB1370654A (en) |
IT (1) | IT944874B (en) |
NL (1) | NL166140C (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3932838A (en) * | 1971-04-23 | 1976-01-13 | General Electric Company | Method and apparatus for controlling circuitry with a plurality of switching means |
GB1416456A (en) * | 1971-12-07 | 1975-12-03 | Matsushita Electric Ind Co Ltd | Signal processing arrangements |
JPS4931232A (en) * | 1972-07-21 | 1974-03-20 | ||
US3825926A (en) * | 1973-02-05 | 1974-07-23 | Ibm | Interfacing circuitry for connecting a remote keyboard with a data receiving buffer |
US3974478A (en) * | 1973-08-09 | 1976-08-10 | Nippon Gakki Seizo Kabushiki Kaisha | Key switch scanning and encoding system |
US3995252A (en) * | 1973-12-26 | 1976-11-30 | General Electric Company | Data processing arrangement for printers |
US4134320A (en) * | 1974-08-19 | 1979-01-16 | Nippon Gakki Seizo Kabushiki Kaisha | Key assigner for use in electronic musical instrument |
US3982236A (en) * | 1974-12-24 | 1976-09-21 | Haig Kafafian | Communications and control method and apparatus for persons who may have muscular incoordination and/or spasticity |
US4117758A (en) * | 1976-11-04 | 1978-10-03 | Kimball International, Inc. | Binary word debouncer |
JPS5477532A (en) * | 1977-12-02 | 1979-06-21 | Matsushita Electric Ind Co Ltd | Key identifying circuit |
DE3023579C2 (en) * | 1980-06-24 | 1984-10-31 | Matth. Hohner Ag, 7218 Trossingen | Electronic musical instrument |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3675239A (en) * | 1970-09-14 | 1972-07-04 | Ncr Co | Unlimited roll keyboard circuit |
-
1970
- 1970-11-14 NL NL7016723.A patent/NL166140C/en not_active IP Right Cessation
-
1971
- 1971-11-03 US US00195415A patent/US3750160A/en not_active Expired - Lifetime
- 1971-11-10 CA CA127317A patent/CA925794A/en not_active Expired
- 1971-11-11 AT AT972771A patent/AT324021B/en not_active IP Right Cessation
- 1971-11-11 GB GB5240771A patent/GB1370654A/en not_active Expired
- 1971-11-11 CH CH1639771A patent/CH538156A/en not_active IP Right Cessation
- 1971-11-11 IT IT54016/71A patent/IT944874B/en active
- 1971-11-11 JP JP8951071A patent/JPS5315336B1/ja active Pending
- 1971-11-12 BE BE775310A patent/BE775310A/en unknown
Also Published As
Publication number | Publication date |
---|---|
US3750160A (en) | 1973-07-31 |
AT324021B (en) | 1975-08-11 |
NL166140C (en) | 1981-06-15 |
CH538156A (en) | 1973-06-15 |
BE775310A (en) | 1972-05-12 |
DE2154596B2 (en) | 1976-08-05 |
JPS5315336B1 (en) | 1978-05-24 |
DE2154596A1 (en) | 1972-05-25 |
NL166140B (en) | 1981-01-15 |
NL7016723A (en) | 1972-05-16 |
GB1370654A (en) | 1974-10-16 |
CA925794A (en) | 1973-05-08 |
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