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JPS54156426A - Drive circuit for segment display - Google Patents

Drive circuit for segment display

Info

Publication number
JPS54156426A
JPS54156426A JP6535478A JP6535478A JPS54156426A JP S54156426 A JPS54156426 A JP S54156426A JP 6535478 A JP6535478 A JP 6535478A JP 6535478 A JP6535478 A JP 6535478A JP S54156426 A JPS54156426 A JP S54156426A
Authority
JP
Japan
Prior art keywords
given
segment
digit
selection signal
display units
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
JP6535478A
Other languages
Japanese (ja)
Inventor
Shunichi Sakaguchi
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.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP6535478A priority Critical patent/JPS54156426A/en
Publication of JPS54156426A publication Critical patent/JPS54156426A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

PURPOSE: To reduce the current consumption, by blocking the DC voltage given to each segment digit of the segment display units, if no segment selection signal is given.
CONSTITUTION: When the display units 10 to 12 are illuminated and the digits more than those are not displayed, for example, the digit selection signal T3(not shown) is given to the transistor Tr 223(not shown) and it is not given to any of the segment selection signals P1 to P7. Thus, the base of Tr 254 is of high level. Accordingly, since no digit designation signal is given to the grid of the display unit 13, the current consumption for the display units not displaying the segments S1 to S7. Further, in illuminating the segments S1 to S7, when the numerals 0 to 9 are displayed, the selection signal P2 or P7 is given without fail by illuminating either of the segment S2 or S7. It makes Tr 254 conductive, and Tr 220 to 222 are conducted based on the digit selection signals T0 to T9 to give the digit selection signal to the grids.
COPYRIGHT: (C)1979,JPO&Japio
JP6535478A 1978-05-30 1978-05-30 Drive circuit for segment display Pending JPS54156426A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6535478A JPS54156426A (en) 1978-05-30 1978-05-30 Drive circuit for segment display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6535478A JPS54156426A (en) 1978-05-30 1978-05-30 Drive circuit for segment display

Publications (1)

Publication Number Publication Date
JPS54156426A true JPS54156426A (en) 1979-12-10

Family

ID=13284527

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6535478A Pending JPS54156426A (en) 1978-05-30 1978-05-30 Drive circuit for segment display

Country Status (1)

Country Link
JP (1) JPS54156426A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58162989A (en) * 1982-03-23 1983-09-27 日本電気株式会社 Display control signal generator
JPS644494U (en) * 1987-06-25 1989-01-11
JP2009258188A (en) * 2008-04-12 2009-11-05 Futaba Corp Fluorescent display tube and method for driving fluorescent display tube

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58162989A (en) * 1982-03-23 1983-09-27 日本電気株式会社 Display control signal generator
JPH0363076B2 (en) * 1982-03-23 1991-09-27 Nippon Electric Co
JPS644494U (en) * 1987-06-25 1989-01-11
JP2009258188A (en) * 2008-04-12 2009-11-05 Futaba Corp Fluorescent display tube and method for driving fluorescent display tube

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