JPS52146586A - Non-volatile semiconductor memory device - Google Patents

Non-volatile semiconductor memory device

Info

Publication number
JPS52146586A
JPS52146586A JP6305576A JP6305576A JPS52146586A JP S52146586 A JPS52146586 A JP S52146586A JP 6305576 A JP6305576 A JP 6305576A JP 6305576 A JP6305576 A JP 6305576A JP S52146586 A JPS52146586 A JP S52146586A
Authority
JP
Japan
Prior art keywords
memory device
semiconductor memory
volatile semiconductor
erasing
windows
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
JP6305576A
Other languages
Japanese (ja)
Inventor
Masanori Ihara
Yuji Takeshita
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 JP6305576A priority Critical patent/JPS52146586A/en
Publication of JPS52146586A publication Critical patent/JPS52146586A/en
Pending legal-status Critical Current

Links

Landscapes

  • Non-Volatile Memory (AREA)

Abstract

PURPOSE: To achieve the increase in size of memory chips without increasing the area of windows by making possible the radiation of light used for writing or erasing of data through a transparent body which has concave lens action.
COPYRIGHT: (C)1977,JPO&Japio
JP6305576A 1976-05-31 1976-05-31 Non-volatile semiconductor memory device Pending JPS52146586A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6305576A JPS52146586A (en) 1976-05-31 1976-05-31 Non-volatile semiconductor memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6305576A JPS52146586A (en) 1976-05-31 1976-05-31 Non-volatile semiconductor memory device

Publications (1)

Publication Number Publication Date
JPS52146586A true JPS52146586A (en) 1977-12-06

Family

ID=13218258

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6305576A Pending JPS52146586A (en) 1976-05-31 1976-05-31 Non-volatile semiconductor memory device

Country Status (1)

Country Link
JP (1) JPS52146586A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5124140A (en) * 1974-05-15 1976-02-26 Isotronics Inc Prom yoshigaisentokamadotosonoseiho

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5124140A (en) * 1974-05-15 1976-02-26 Isotronics Inc Prom yoshigaisentokamadotosonoseiho

Similar Documents

Publication Publication Date Title
DE3177270D1 (en) SEMICONDUCTOR MEMORY WITH DATA PROGRAMMING TIME.
NL7806294A (en) INTEGRATED SEMICONDUCTOR MEMORY DEVICE.
JPS5226179A (en) Semi-conductor unit
JPS53148256A (en) Nonvolatile semiconductor memory device
JPS52111341A (en) Semiconductor memory device
JPS52146586A (en) Non-volatile semiconductor memory device
JPS545343A (en) Micro program processing system
JPS52140238A (en) Memory erasion unit
JPS5334430A (en) Memory unit
JPS53101936A (en) Data processor
JPS51140528A (en) Magnetic bubble module
JPS5210032A (en) Construction method of semiconductor memory unit
JPS52138144A (en) Lens
JPS5384413A (en) Solid state pickup device
NL7901871A (en) SEMICONDUCTOR MEMORY.
JPS5295128A (en) Information processing device
JPS5374837A (en) Bar code reading device
JPS5245907A (en) Automatic optical path adjusting device
JPS5339024A (en) Semiconductor memory unit
JPS528738A (en) Memory erasing system
JPS52107737A (en) Semiconductor memory circuit
JPS53102684A (en) Semiconductor memory device
JPS5250631A (en) Optical symbol reading device
JPS5275284A (en) Semiconductor light emitting device
JPS52154313A (en) Semiconductor memory