JPS5493324A - Page selection control system for multi-item key input unit - Google Patents

Page selection control system for multi-item key input unit

Info

Publication number
JPS5493324A
JPS5493324A JP14722977A JP14722977A JPS5493324A JP S5493324 A JPS5493324 A JP S5493324A JP 14722977 A JP14722977 A JP 14722977A JP 14722977 A JP14722977 A JP 14722977A JP S5493324 A JPS5493324 A JP S5493324A
Authority
JP
Japan
Prior art keywords
page selection
pulse
circuit
motor
selection control
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.)
Granted
Application number
JP14722977A
Other languages
Japanese (ja)
Other versions
JPS5612893B2 (en
Inventor
Tatsuro Konuma
Masao Fukai
Mitsuyasu Miyatsu
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP14722977A priority Critical patent/JPS5493324A/en
Publication of JPS5493324A publication Critical patent/JPS5493324A/en
Publication of JPS5612893B2 publication Critical patent/JPS5612893B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Input From Keyboards Or The Like (AREA)

Abstract

PURPOSE: To increase the reliability of page selection control, by providing the page selection set including the position detector producing two pulses with the position of display component and the control circuit controlling the drive source.
CONSTITUTION: The motor 9 of the page selection set 1 is connected to the motor drive circuit 16 of the control circuit 15, the first pulse A of the position detector 14 is connected to the clock terminal 18 and the AND circuit 19 of the memory element 17, and the second pulse B is connected to the input terminal 21 and the clear terminal 22 of the element 17. The element 17 is connected to the reversible counter 25 via the output circuit 19. The signal coded in the encoder 28 is fed to the comparator 26 with the depression of the page selection switch 27. The count value of the counter 25 and the signal from the encoder 28 are compared in the comparator 26, controlling the circuit 16 and directing the direction of revolution of motor. The memory element 17 memorizes the input state in synchronizing with the trailing of the pulse A and it is cleared with the pulse B, then the reliability can be increased even with mis-pulse A, without malfunction.
COPYRIGHT: (C)1979,JPO&Japio
JP14722977A 1977-12-09 1977-12-09 Page selection control system for multi-item key input unit Granted JPS5493324A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14722977A JPS5493324A (en) 1977-12-09 1977-12-09 Page selection control system for multi-item key input unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14722977A JPS5493324A (en) 1977-12-09 1977-12-09 Page selection control system for multi-item key input unit

Publications (2)

Publication Number Publication Date
JPS5493324A true JPS5493324A (en) 1979-07-24
JPS5612893B2 JPS5612893B2 (en) 1981-03-25

Family

ID=15425480

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14722977A Granted JPS5493324A (en) 1977-12-09 1977-12-09 Page selection control system for multi-item key input unit

Country Status (1)

Country Link
JP (1) JPS5493324A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5222828A (en) * 1975-08-14 1977-02-21 Komota Giken Kk Keyboard device
JPS5245223A (en) * 1975-10-07 1977-04-09 Fujitsu Ltd Print starting administration system of printing medium

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5222828A (en) * 1975-08-14 1977-02-21 Komota Giken Kk Keyboard device
JPS5245223A (en) * 1975-10-07 1977-04-09 Fujitsu Ltd Print starting administration system of printing medium

Also Published As

Publication number Publication date
JPS5612893B2 (en) 1981-03-25

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