Title:
ACTION SWITCHING SYSTEM FOR CENTRAL PROCESSING UNIT
Document Type and Number:
Japanese Patent JPH01171010
Kind Code:
A
Abstract:
PURPOSE:To attain the action condition switching without increasing the parts of the circuit constitution and changing a software at a terminal by switching an action condition after warming-up with a central processing unit. CONSTITUTION:The system is equipped with a light receiving part to receive a light 8 which converted data, a change-over switch 14 used for impressing the output of the light receiving part 7 to an interruption signal impressing terminal 10, a direct current voltage source 16 connected to the interruption signal impressing terminal 10, a connecting path 15 to give the direct current voltage of the interruption signal impressing terminal 10 to the light receiving part 7 and an interruption prohibiting signal impressing terminal 13 to control the switching of the change-over switch 14. A sleeve condition and a warming up period are set. Thus, without increasing the parts of the circuit constitution and without changing the software at the terminal, the central processing unit can be switched from the sleeve condition to the normal action condition.
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Inventors:
MATSUBAYASHI TAKAO
SAKAGUCHI AKIHIKO
SAKAGUCHI AKIHIKO
Application Number:
JP33093187A
Publication Date:
July 06, 1989
Filing Date:
December 26, 1987
Export Citation:
Assignee:
FUJITSU LTD
International Classes:
G06F1/32; G06F1/00; G06F1/04; (IPC1-7): G06F1/00; G06F1/04
Attorney, Agent or Firm:
Eisuke Suzuki