JPS57136234A - Terminal device - Google Patents

Terminal device

Info

Publication number
JPS57136234A
JPS57136234A JP56021490A JP2149081A JPS57136234A JP S57136234 A JPS57136234 A JP S57136234A JP 56021490 A JP56021490 A JP 56021490A JP 2149081 A JP2149081 A JP 2149081A JP S57136234 A JPS57136234 A JP S57136234A
Authority
JP
Japan
Prior art keywords
battery
power supply
input
test program
voltage
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
JP56021490A
Other languages
Japanese (ja)
Inventor
Hidekiyo Kushima
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56021490A priority Critical patent/JPS57136234A/en
Publication of JPS57136234A publication Critical patent/JPS57136234A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Power Sources (AREA)

Abstract

PURPOSE:To increase the lifetime of a battery, by executing a test program of an input/output device with application of a battery power supply and releasing the connection of the power supply of the input/output device which is not necessary for the time being after the execution of the test program is over. CONSTITUTION:When a power supply switch 18 is applied, an initializing voltage detecting/charging circuit 17 supplies the electric power of a power supply battery 1 to a semiconductor switch 15 and each block enclosed by a chain line to produce an initializing signal 19. A CPU3 confirms whether the voltage of the battery 1 drops or not by means of the firmware of an ROM4, and gives an alarm in the case of a drop of the voltage to stop the operation. When the battery voltage is normal, a memory test is carried out. Then an instruction is sent to a semiconductor switch control part 16, and the battery 1 is connected to each input device via the switch 15. After this, the test program is executed, and an error if occurs is displayed at an LCD5. When the test program is over, the connection of power supply is released for the input/output device which is not necessary for the time being. Thus the lifetime of a battery is increased for a portable terminal device.
JP56021490A 1981-02-18 1981-02-18 Terminal device Pending JPS57136234A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56021490A JPS57136234A (en) 1981-02-18 1981-02-18 Terminal device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56021490A JPS57136234A (en) 1981-02-18 1981-02-18 Terminal device

Publications (1)

Publication Number Publication Date
JPS57136234A true JPS57136234A (en) 1982-08-23

Family

ID=12056408

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56021490A Pending JPS57136234A (en) 1981-02-18 1981-02-18 Terminal device

Country Status (1)

Country Link
JP (1) JPS57136234A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59142624A (en) * 1983-02-04 1984-08-15 Nec Corp Battery saving system
JPH0325928U (en) * 1989-07-25 1991-03-18

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51112229A (en) * 1975-03-28 1976-10-04 Hitachi Ltd Power lamp lighting system of terminal processor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51112229A (en) * 1975-03-28 1976-10-04 Hitachi Ltd Power lamp lighting system of terminal processor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59142624A (en) * 1983-02-04 1984-08-15 Nec Corp Battery saving system
JPH0325928U (en) * 1989-07-25 1991-03-18

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