GB1137199A - Magnetic thin film store - Google Patents

Magnetic thin film store

Info

Publication number
GB1137199A
GB1137199A GB5375767A GB5375767A GB1137199A GB 1137199 A GB1137199 A GB 1137199A GB 5375767 A GB5375767 A GB 5375767A GB 5375767 A GB5375767 A GB 5375767A GB 1137199 A GB1137199 A GB 1137199A
Authority
GB
United Kingdom
Prior art keywords
word
conductors
digit
strips
strip
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
GB5375767A
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 GB1137199A publication Critical patent/GB1137199A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C5/00—Details of stores covered by group G11C11/00
    • G11C5/02—Disposition of storage elements, e.g. in the form of a matrix array
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
    • G11C11/14—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using thin-film elements
    • G11C11/15—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using thin-film elements using multiple magnetic layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Magnetic Heads (AREA)
  • Semiconductor Memories (AREA)

Abstract

1,137,199. Magnetic storage apparatus. INTERNATIONAL BUSINESS MACHINES CORP. 27 Nov., 1967 [29 Dec., 19661, No. 53757/67. Heading H3B. In a storage matrix in which orthogonal word conductors 16 and digit conductors 20 are associated with parallel strips 14 of anisotropic magnetic thin film material, the word conductors are positioned immediately adjacent to and parallel with the strips and the arrangement is overlaid by a keeper plate 22 of non- remanent magnetic material. The strips are deposited on a coated substrate 10 and each have an easy magnetization axis 15 in the longitudinal direction of the strip. An external magnetic biasing field is applied by coils 26 which biases the magnetization of each strip towards the hard direction. The word and digit conductors are separated by insulation strips 18, the word conductors being connected to a word select and drive circuit 30, and the digit conductors connected either to a digit select and drive circuit 40 or to loads 42 by switches 34, 36. Operation to write or sense a binary digit in a discrete portion of a strip is effected by overlapping pulses in the usual manner. The arrangement is stated to reduce creep in unselected storage portions by using a lower word drive current and having a reduced stray field.
GB5375767A 1966-12-29 1967-11-27 Magnetic thin film store Expired GB1137199A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60586966A 1966-12-29 1966-12-29

Publications (1)

Publication Number Publication Date
GB1137199A true GB1137199A (en) 1968-12-18

Family

ID=24425531

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5375767A Expired GB1137199A (en) 1966-12-29 1967-11-27 Magnetic thin film store

Country Status (3)

Country Link
DE (1) DE1524896A1 (en)
FR (1) FR1543789A (en)
GB (1) GB1137199A (en)

Also Published As

Publication number Publication date
DE1524896A1 (en) 1970-11-26
FR1543789A (en)

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