JPS5563416A - Input and output bus disconnection system for electronic computer - Google Patents

Input and output bus disconnection system for electronic computer

Info

Publication number
JPS5563416A
JPS5563416A JP13674178A JP13674178A JPS5563416A JP S5563416 A JPS5563416 A JP S5563416A JP 13674178 A JP13674178 A JP 13674178A JP 13674178 A JP13674178 A JP 13674178A JP S5563416 A JPS5563416 A JP S5563416A
Authority
JP
Japan
Prior art keywords
bus
switch
input
output bus
electronic computer
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
JP13674178A
Other languages
Japanese (ja)
Inventor
Juntaro Kamei
Shiro Tagawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13674178A priority Critical patent/JPS5563416A/en
Publication of JPS5563416A publication Critical patent/JPS5563416A/en
Pending legal-status Critical Current

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  • Debugging And Monitoring (AREA)

Abstract

PURPOSE: To disconnect the bus without interference other bus, by interlocking the signal system delivered from the disconnected bus to the upper rank bus with the output of FF set when the switch is ON and the bus having the switch is not in operation.
CONSTITUTION: The upper rank bus 2 and the lower rank bus 3 are connected to the same power supply. When the local switch 31 at the bus 3 is ON, the display lamps 34 and 35 illuminate. The interlock switch 15 at the bus expander 8 mounted in the bus 2 is turned on by observing the illumination of the display lamp 35. One side of the switch 15 is directly connected to ground, and as far as it is ON, even if the expander 8 is disconnected while the power supply is applied, the gates 24 and 25 are not open. When the switch 15 is ON, even with the bus 3 in any conditions, no interference can be given to the bus 2.
COPYRIGHT: (C)1980,JPO&Japio
JP13674178A 1978-11-08 1978-11-08 Input and output bus disconnection system for electronic computer Pending JPS5563416A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13674178A JPS5563416A (en) 1978-11-08 1978-11-08 Input and output bus disconnection system for electronic computer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13674178A JPS5563416A (en) 1978-11-08 1978-11-08 Input and output bus disconnection system for electronic computer

Publications (1)

Publication Number Publication Date
JPS5563416A true JPS5563416A (en) 1980-05-13

Family

ID=15182410

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13674178A Pending JPS5563416A (en) 1978-11-08 1978-11-08 Input and output bus disconnection system for electronic computer

Country Status (1)

Country Link
JP (1) JPS5563416A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04205135A (en) * 1990-11-30 1992-07-27 Hitachi Ltd Method and device for displaying hot line insertion and extraction
JPH04273359A (en) * 1991-02-28 1992-09-29 Nec Corp Bus circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5325747A (en) * 1976-08-24 1978-03-09 Hitachi Ltd Water flowing face corrosion preventing method of hydraulic machine and its device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5325747A (en) * 1976-08-24 1978-03-09 Hitachi Ltd Water flowing face corrosion preventing method of hydraulic machine and its device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04205135A (en) * 1990-11-30 1992-07-27 Hitachi Ltd Method and device for displaying hot line insertion and extraction
JPH04273359A (en) * 1991-02-28 1992-09-29 Nec Corp Bus circuit

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