JPS56152020A - Arithmetic processor - Google Patents

Arithmetic processor

Info

Publication number
JPS56152020A
JPS56152020A JP5404780A JP5404780A JPS56152020A JP S56152020 A JPS56152020 A JP S56152020A JP 5404780 A JP5404780 A JP 5404780A JP 5404780 A JP5404780 A JP 5404780A JP S56152020 A JPS56152020 A JP S56152020A
Authority
JP
Japan
Prior art keywords
cpu21
arithmetic processing
phi2
cpu
supply
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
JP5404780A
Other languages
Japanese (ja)
Other versions
JPS5828608B2 (en
Inventor
Yoshishige Ogawa
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 JP55054047A priority Critical patent/JPS5828608B2/en
Publication of JPS56152020A publication Critical patent/JPS56152020A/en
Publication of JPS5828608B2 publication Critical patent/JPS5828608B2/en
Expired 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)
  • Calculators And Similar Devices (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

PURPOSE:To reduce the power consumption of a device extremely by turning off CPU without supplying a clock pulse to CPU by FF except in the arithmetic processing of CPU. CONSTITUTION:In key switch operation, the key signal that corresponds to an operated key switch is inputted to CPU21, which performs the arithmetic processing corresponding to the key input to output the arithmetic result. On this arithmetic processing, CPU21 outputs a high-level end signal. Consequently, flip-flop F2 resets to stop the supply of clock pulses phi1 and phi2 to CPU21. Every time a key switch is operated, F2 sets to supply pulses phi1 and phi2 to CPU21, which performs arithmetic processing and on completing the arithmetic processing, F2 resets to stop the supply of pulses phi1 and phi2 to CPU21.
JP55054047A 1980-04-23 1980-04-23 arithmetic processing unit Expired JPS5828608B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55054047A JPS5828608B2 (en) 1980-04-23 1980-04-23 arithmetic processing unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55054047A JPS5828608B2 (en) 1980-04-23 1980-04-23 arithmetic processing unit

Publications (2)

Publication Number Publication Date
JPS56152020A true JPS56152020A (en) 1981-11-25
JPS5828608B2 JPS5828608B2 (en) 1983-06-17

Family

ID=12959684

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55054047A Expired JPS5828608B2 (en) 1980-04-23 1980-04-23 arithmetic processing unit

Country Status (1)

Country Link
JP (1) JPS5828608B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5979324A (en) * 1982-10-28 1984-05-08 Nec Home Electronics Ltd Power consumption reducing circuit of computer
JPS5979325A (en) * 1982-10-29 1984-05-08 Nec Home Electronics Ltd Power consumption reducing circuit of computer
JPS60170835U (en) * 1984-04-17 1985-11-12 パイオニア株式会社 Backup control circuit
US5548765A (en) * 1990-08-28 1996-08-20 Seiko Epson Corporation Power saving display subsystem for portable computers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5979324A (en) * 1982-10-28 1984-05-08 Nec Home Electronics Ltd Power consumption reducing circuit of computer
JPS5979325A (en) * 1982-10-29 1984-05-08 Nec Home Electronics Ltd Power consumption reducing circuit of computer
JPS60170835U (en) * 1984-04-17 1985-11-12 パイオニア株式会社 Backup control circuit
JPH0542499Y2 (en) * 1984-04-17 1993-10-26
US5548765A (en) * 1990-08-28 1996-08-20 Seiko Epson Corporation Power saving display subsystem for portable computers

Also Published As

Publication number Publication date
JPS5828608B2 (en) 1983-06-17

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