JPS6470819A - Data processor - Google Patents

Data processor

Info

Publication number
JPS6470819A
JPS6470819A JP62228152A JP22815287A JPS6470819A JP S6470819 A JPS6470819 A JP S6470819A JP 62228152 A JP62228152 A JP 62228152A JP 22815287 A JP22815287 A JP 22815287A JP S6470819 A JPS6470819 A JP S6470819A
Authority
JP
Japan
Prior art keywords
terminal
inverter
connector
held
cable
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
JP62228152A
Other languages
Japanese (ja)
Inventor
Hidetoshi Himuro
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.)
NEC Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
Nippon Electric Co 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 NEC Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP62228152A priority Critical patent/JPS6470819A/en
Publication of JPS6470819A publication Critical patent/JPS6470819A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Landscapes

  • Accessory Devices And Overall Control Thereof (AREA)

Abstract

PURPOSE:To effectively prevent the generation of useless power consumption by connecting a feed control means for feeding current to a buffer circuit only when a cable is connected to a connector. CONSTITUTION:An input terminal of an inverter 16 is connected to an ground terminal 12a of the connector 12 and a ground voltage is applied to the terminal 12a when the cable connected to an external device such as a printer is connected to the terminal 12a. An output terminal of an inverter 16 is connected to a base terminal of a switching transistor (TR) 14 through a resistor R2. When the cable for connecting a data processor 10 to the external device such as a printer is not connected to the connector 12, its ground terminal 12a is in a floated state and its voltage is held at the value of about +5 volt. Thereby, the input of the inverter 16 is held at the high state and a low output is supplied to the base terminal of the TR 14. Since the TR 14 is held at a non-conductive state and no current is fed to the buffer circuit 13, power consumption is not generated.
JP62228152A 1987-09-11 1987-09-11 Data processor Pending JPS6470819A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62228152A JPS6470819A (en) 1987-09-11 1987-09-11 Data processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62228152A JPS6470819A (en) 1987-09-11 1987-09-11 Data processor

Publications (1)

Publication Number Publication Date
JPS6470819A true JPS6470819A (en) 1989-03-16

Family

ID=16872040

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62228152A Pending JPS6470819A (en) 1987-09-11 1987-09-11 Data processor

Country Status (1)

Country Link
JP (1) JPS6470819A (en)

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