JPS55147834A - Logical integrated circuit easy to check - Google Patents

Logical integrated circuit easy to check

Info

Publication number
JPS55147834A
JPS55147834A JP5615679A JP5615679A JPS55147834A JP S55147834 A JPS55147834 A JP S55147834A JP 5615679 A JP5615679 A JP 5615679A JP 5615679 A JP5615679 A JP 5615679A JP S55147834 A JPS55147834 A JP S55147834A
Authority
JP
Japan
Prior art keywords
diodes
group
signal
lines
input signal
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
JP5615679A
Other languages
Japanese (ja)
Other versions
JPS6145899B2 (en
Inventor
Yoshihiro Kasuya
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 Corp
Original Assignee
NEC Corp
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 Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP5615679A priority Critical patent/JPS55147834A/en
Publication of JPS55147834A publication Critical patent/JPS55147834A/en
Publication of JPS6145899B2 publication Critical patent/JPS6145899B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Tests Of Electronic Circuits (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)
  • Logic Circuits (AREA)

Abstract

PURPOSE: To facilitate check by making it possible to write an arbitrary signal to the FF group and read the output signal arbitrarily in the logical integrated circuit incorporating a programmable logic array PLA equipped with FFs.
CONSTITUTION: When control signal "0" is applied to control signal line 402, diodes 441∼44N become conductive, and respective produce item lines 1031∼103N become low-potential due to voltage drop of resistors 411∼41N and become unoperatable logically. At this time, the initializing signal is first applied to signal line 302 to initialize FF group 3, and the input signal is input by external input signal lines 1011∼101N and is transferred to input signal lines 2021∼202N through diodes 511∼ 51N, buses 5011∼501N, and diodes 531∼53N and is written to FF group 3. Next, when "1" is applied to all of external input signal lines 1011∼101N, the output signal of FF group 3 is transferred to external output signal lines 2011∼ 201N through diodes 521∼52N, buses 5011∼502N and diodes 541∼54N.
COPYRIGHT: (C)1980,JPO&Japio
JP5615679A 1979-05-08 1979-05-08 Logical integrated circuit easy to check Granted JPS55147834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5615679A JPS55147834A (en) 1979-05-08 1979-05-08 Logical integrated circuit easy to check

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5615679A JPS55147834A (en) 1979-05-08 1979-05-08 Logical integrated circuit easy to check

Publications (2)

Publication Number Publication Date
JPS55147834A true JPS55147834A (en) 1980-11-18
JPS6145899B2 JPS6145899B2 (en) 1986-10-11

Family

ID=13019221

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5615679A Granted JPS55147834A (en) 1979-05-08 1979-05-08 Logical integrated circuit easy to check

Country Status (1)

Country Link
JP (1) JPS55147834A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100649271B1 (en) * 2004-08-20 2006-11-24 경원 주식회사 A Roll Crusher

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100649271B1 (en) * 2004-08-20 2006-11-24 경원 주식회사 A Roll Crusher

Also Published As

Publication number Publication date
JPS6145899B2 (en) 1986-10-11

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