JPS5221729A - Key input device - Google Patents

Key input device

Info

Publication number
JPS5221729A
JPS5221729A JP50097782A JP9778275A JPS5221729A JP S5221729 A JPS5221729 A JP S5221729A JP 50097782 A JP50097782 A JP 50097782A JP 9778275 A JP9778275 A JP 9778275A JP S5221729 A JPS5221729 A JP S5221729A
Authority
JP
Japan
Prior art keywords
input device
key input
key
signal
idscriminate
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
Application number
JP50097782A
Other languages
English (en)
Inventor
Kouji Maekawa
Iwao Hamazaki
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP50097782A priority Critical patent/JPS5221729A/ja
Priority to CA258,337A priority patent/CA1057203A/en
Priority to US05/712,042 priority patent/US4099177A/en
Priority to DE2636189A priority patent/DE2636189C3/de
Publication of JPS5221729A publication Critical patent/JPS5221729A/ja
Pending legal-status Critical Current

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)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
JP50097782A 1975-08-11 1975-08-11 Key input device Pending JPS5221729A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP50097782A JPS5221729A (en) 1975-08-11 1975-08-11 Key input device
CA258,337A CA1057203A (en) 1975-08-11 1976-08-03 Keyboard entry circuitry of the key strobing type
US05/712,042 US4099177A (en) 1975-08-11 1976-08-06 Keyboard entry circuitry of the key strobing type
DE2636189A DE2636189C3 (de) 1975-08-11 1976-08-11 Schaltung zur Impulsabfrage der Tasten eines Tastenfeldes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50097782A JPS5221729A (en) 1975-08-11 1975-08-11 Key input device

Publications (1)

Publication Number Publication Date
JPS5221729A true JPS5221729A (en) 1977-02-18

Family

ID=14201386

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50097782A Pending JPS5221729A (en) 1975-08-11 1975-08-11 Key input device

Country Status (4)

Country Link
US (1) US4099177A (ja)
JP (1) JPS5221729A (ja)
CA (1) CA1057203A (ja)
DE (1) DE2636189C3 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57169888A (en) * 1981-04-14 1982-10-19 Nippon Coinco Co Ltd Automatic vending machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2756327C2 (de) * 1977-12-17 1979-11-15 Deutsche Itt Industries Gmbh, 7800 Freiburg Schaltung sanordnung für eine Eingabetastatur
DE2830283A1 (de) * 1978-07-10 1980-01-24 Siemens Ag Anschaltung einer tastatur an einen rechner, insbesondere mikrocomputer, zum eingeben von kommandos und/oder kommandofolgen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5050819A (ja) * 1973-09-05 1975-05-07
JPS5075335A (ja) * 1973-11-06 1975-06-20

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3623082A (en) * 1970-05-27 1971-11-23 Clare & Co C P Keyboard assembly
NL7213611A (ja) * 1971-10-08 1973-04-10
US3777222A (en) * 1972-05-12 1973-12-04 Ibm Modular touch sensitive indicating panels with touch and light transmissive overlay cover membrane containing visible printed indicia
JPS4931232A (ja) * 1972-07-21 1974-03-20

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5050819A (ja) * 1973-09-05 1975-05-07
JPS5075335A (ja) * 1973-11-06 1975-06-20

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57169888A (en) * 1981-04-14 1982-10-19 Nippon Coinco Co Ltd Automatic vending machine

Also Published As

Publication number Publication date
US4099177A (en) 1978-07-04
DE2636189B2 (de) 1978-05-18
DE2636189C3 (de) 1979-01-25
DE2636189A1 (de) 1977-02-17
CA1057203A (en) 1979-06-26

Similar Documents

Publication Publication Date Title
JPS5263036A (en) Full addition and subtraction circuit
JPS51126894A (en) Voltammetry apparatus
JPS5250628A (en) Key input reading system
JPS5223237A (en) Passbook handling device
JPS5211655A (en) Dust-proof device for mat etc
JPS5221729A (en) Key input device
JPS51114989A (en) Oxygen depletion sensor
JPS51140514A (en) Signal processing circuit of no-contact
JPS5221728A (en) Power restoration interruption circuit
JPS51132049A (en) Arithmetic unit of key operation according to expressions
JPS5228819A (en) Key input device
JPS52129271A (en) Signal detection unit
JPS5266327A (en) Key inputting unit
JPS5249739A (en) Round processing system
JPS51111366A (en) Effective value transformation apparatus
JPS51141649A (en) Detecting apparatus for focus matching
JPS51131964A (en) Filter device
JPS51149723A (en) Key input system
JPS5224051A (en) Counting-frections-as-one arithmetic processing unit
JPS51135620A (en) Signal switchover circuit
JPS5229588A (en) Parallel operation process of sequence control device
JPS5241560A (en) Alarm sound detecting device
JPS51112400A (en) Processing device for coin counting
JPS51132732A (en) False-information detection unit
JPS5329029A (en) Position detecting method