JPS5622973A - Discriminating device - Google Patents

Discriminating device

Info

Publication number
JPS5622973A
JPS5622973A JP9728279A JP9728279A JPS5622973A JP S5622973 A JPS5622973 A JP S5622973A JP 9728279 A JP9728279 A JP 9728279A JP 9728279 A JP9728279 A JP 9728279A JP S5622973 A JPS5622973 A JP S5622973A
Authority
JP
Japan
Prior art keywords
socket
control signal
pins
prom50
pit25
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
JP9728279A
Other languages
English (en)
Japanese (ja)
Other versions
JPH039426B2 (cs
Inventor
Hiroshi Ozaki
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 JP9728279A priority Critical patent/JPS5622973A/ja
Publication of JPS5622973A publication Critical patent/JPS5622973A/ja
Publication of JPH039426B2 publication Critical patent/JPH039426B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • For Increasing The Reliability Of Semiconductor Memories (AREA)
  • Testing Of Individual Semiconductor Devices (AREA)
  • Read Only Memory (AREA)
JP9728279A 1979-08-01 1979-08-01 Discriminating device Granted JPS5622973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9728279A JPS5622973A (en) 1979-08-01 1979-08-01 Discriminating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9728279A JPS5622973A (en) 1979-08-01 1979-08-01 Discriminating device

Publications (2)

Publication Number Publication Date
JPS5622973A true JPS5622973A (en) 1981-03-04
JPH039426B2 JPH039426B2 (cs) 1991-02-08

Family

ID=14188148

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9728279A Granted JPS5622973A (en) 1979-08-01 1979-08-01 Discriminating device

Country Status (1)

Country Link
JP (1) JPS5622973A (cs)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5244178A (en) * 1975-10-06 1977-04-06 Hitachi Ltd Semiconductor integrated circuit device
JPS5483381A (en) * 1977-12-16 1979-07-03 Hitachi Ltd Detection method of integrated circuit insertion direction

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5244178A (en) * 1975-10-06 1977-04-06 Hitachi Ltd Semiconductor integrated circuit device
JPS5483381A (en) * 1977-12-16 1979-07-03 Hitachi Ltd Detection method of integrated circuit insertion direction

Also Published As

Publication number Publication date
JPH039426B2 (cs) 1991-02-08

Similar Documents

Publication Publication Date Title
JPS57179997A (en) Semiconductor memory
DE69128223D1 (de) Halbleiterspeicher mit einer Flagge zum Prüfmodusanzeigen
JPS5622973A (en) Discriminating device
EP0127015A3 (en) Integrated digital mos semiconductor circuit
JPS5515559A (en) Test input circuit of microcomputer
JPS5685130A (en) Rom access circuit
JPS5244178A (en) Semiconductor integrated circuit device
JPS5483381A (en) Detection method of integrated circuit insertion direction
JPS5360169A (en) Semiconductor integrated circuit device
JPS51138358A (en) Electronic circuit testing apparatus
JPS51114882A (en) Mos-type variable resistance element incorporated in an ic
JPS5633749A (en) Address control device
GB2001484A (en) A connector for circuit boards
JPS5481077A (en) Semiconductor wafer
JPS57163878A (en) Test signal generating circuit for integrated circuit
JPS6467800A (en) Nonvolatile semiconductor memory device
JPS5249867A (en) Voltage level detecting circuit of complementary type field effect ele ment integrated circuits
JPS5641600A (en) Detection system for memory capacity
JPS5798172A (en) Memory access controlling circuit
JPS5610735A (en) Semiconductor device
JPS5487189A (en) Test method for lsi
JPS5387185A (en) Half-fixed electronic variable resistor
JPS554903A (en) Method for constructing semi-conductor integrated circuit
JPS5512541A (en) Compensation system for open wire
KIRSCHNER A method for the assessment of the electrical stability of TTL gates