GB1380282A - Keyboards - Google Patents

Keyboards

Info

Publication number
GB1380282A
GB1380282A GB2325172A GB2325172A GB1380282A GB 1380282 A GB1380282 A GB 1380282A GB 2325172 A GB2325172 A GB 2325172A GB 2325172 A GB2325172 A GB 2325172A GB 1380282 A GB1380282 A GB 1380282A
Authority
GB
United Kingdom
Prior art keywords
output
counter
signal
gate
shift register
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.)
Expired
Application number
GB2325172A
Other languages
English (en)
Inventor
V M Bernin
K A Engstrom
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Illinois Tool Works Inc
Original Assignee
Illinois Tool Works Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Illinois Tool Works Inc filed Critical Illinois Tool Works Inc
Priority to GB1935274A priority Critical patent/GB1380283A/en
Priority to GB1935374A priority patent/GB1380284A/en
Publication of GB1380282A publication Critical patent/GB1380282A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
    • H04L13/16—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00 of transmitters, e.g. code-bars, code-discs
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/80—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using non-linear magnetic devices; using non-linear dielectric devices
    • H03K17/81—Switching arrangements with several input- or output-terminals, e.g. multiplexers, distributors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
    • H03K17/972—Switches controlled by moving an element forming part of the switch using a magnetic movable element having a plurality of control members, e.g. keyboard
    • 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
    • H03M11/02—Details

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Input From Keyboards Or The Like (AREA)
GB2325172A 1971-05-19 1972-05-17 Keyboards Expired GB1380282A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1935274A GB1380283A (en) 1971-05-19 1972-05-17 Keyboard
GB1935374A GB1380284A (en) 1971-05-19 1972-05-17 Keyboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14490271A 1971-05-19 1971-05-19

Publications (1)

Publication Number Publication Date
GB1380282A true GB1380282A (en) 1975-01-08

Family

ID=22510654

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2325172A Expired GB1380282A (en) 1971-05-19 1972-05-17 Keyboards

Country Status (11)

Country Link
JP (1) JPS5329970B1 (enExample)
BR (1) BR7202800D0 (enExample)
CA (1) CA937875A (enExample)
CH (1) CH567762A5 (enExample)
DE (1) DE2219288B2 (enExample)
FR (1) FR2139237A5 (enExample)
GB (1) GB1380282A (enExample)
HK (1) HK5478A (enExample)
IT (1) IT950268B (enExample)
NL (1) NL152996B (enExample)
SE (1) SE375392B (enExample)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3003139A (en) * 1955-04-29 1961-10-03 Gen Electronic Lab Inc Electrical information storage system
US3193809A (en) * 1961-05-03 1965-07-06 Sylvania Electric Prod Memory noise cancellation
US3675239A (en) * 1970-09-14 1972-07-04 Ncr Co Unlimited roll keyboard circuit

Also Published As

Publication number Publication date
NL7205053A (enExample) 1972-11-21
SE375392B (enExample) 1975-04-14
NL152996B (nl) 1977-04-15
DE2219288B2 (de) 1975-09-04
CA937875A (en) 1973-12-04
FR2139237A5 (enExample) 1973-01-05
DE2219288A1 (de) 1972-11-30
BR7202800D0 (pt) 1973-06-12
JPS5329970B1 (enExample) 1978-08-24
IT950268B (it) 1973-06-20
CH567762A5 (enExample) 1975-10-15
HK5478A (en) 1978-02-03

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee