GB1456608A - Read only memory - Google Patents

Read only memory

Info

Publication number
GB1456608A
GB1456608A GB2220074A GB2220074A GB1456608A GB 1456608 A GB1456608 A GB 1456608A GB 2220074 A GB2220074 A GB 2220074A GB 2220074 A GB2220074 A GB 2220074A GB 1456608 A GB1456608 A GB 1456608A
Authority
GB
United Kingdom
Prior art keywords
gate
array
bit
charge
lines
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.)
Expired
Application number
GB2220074A
Other languages
English (en)
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1456608A publication Critical patent/GB1456608A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C17/00—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards
    • G11C17/08—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards using semiconductor devices, e.g. bipolar elements
    • G11C17/10—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards using semiconductor devices, e.g. bipolar elements in which contents are determined during manufacturing by a predetermined arrangement of coupling elements, e.g. mask-programmable ROM
    • G11C17/12—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards using semiconductor devices, e.g. bipolar elements in which contents are determined during manufacturing by a predetermined arrangement of coupling elements, e.g. mask-programmable ROM using field-effect devices

Landscapes

  • Read Only Memory (AREA)
GB2220074A 1973-08-23 1974-05-17 Read only memory Expired GB1456608A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US39142573A 1973-08-23 1973-08-23

Publications (1)

Publication Number Publication Date
GB1456608A true GB1456608A (en) 1976-11-24

Family

ID=23546533

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2220074A Expired GB1456608A (en) 1973-08-23 1974-05-17 Read only memory

Country Status (10)

Country Link
JP (1) JPS5710513B2 (de)
BE (1) BE819134A (de)
CA (1) CA1042550A (de)
CH (1) CH565429A5 (de)
DE (1) DE2439986C3 (de)
FR (1) FR2241845B1 (de)
GB (1) GB1456608A (de)
IT (1) IT1015218B (de)
NL (1) NL7409643A (de)
SE (1) SE400846B (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4025908A (en) * 1975-06-24 1977-05-24 International Business Machines Corporation Dynamic array with clamped bootstrap static input/output circuitry
JPS5341968A (en) * 1976-09-29 1978-04-15 Hitachi Ltd Semiconductor circuit
US4151603A (en) * 1977-10-31 1979-04-24 International Business Machines Corporation Precharged FET ROS array
DE2855744C3 (de) * 1978-12-22 1982-02-18 Siemens AG, 1000 Berlin und 8000 München MOS-integrierte Schaltungsanordnung zur Unterdrückung von in Wortleitungstreibern von Halbleiterspeicher fließenden Ruheströmen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614750A (en) * 1969-07-15 1971-10-19 Ncr Co Read-only memory circuit
DE2128014A1 (de) * 1971-06-05 1972-12-14 Ibm Deutschland Halbleiterfestwertspeicher

Also Published As

Publication number Publication date
BE819134A (fr) 1974-12-16
DE2439986C3 (de) 1982-04-15
IT1015218B (it) 1977-05-10
JPS5710513B2 (de) 1982-02-26
NL7409643A (nl) 1975-02-25
AU7126074A (en) 1976-01-22
FR2241845A1 (de) 1975-03-21
SE7410608L (de) 1975-02-24
DE2439986B2 (de) 1976-05-06
CH565429A5 (de) 1975-08-15
FR2241845B1 (de) 1976-06-25
SE400846B (sv) 1978-04-10
DE2439986A1 (de) 1975-07-10
CA1042550A (en) 1978-11-14
JPS5074348A (de) 1975-06-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930517