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GB1037964A - Memory - Google Patents

Memory

Info

Publication number
GB1037964A
GB1037964A GB284064A GB284064A GB1037964A GB 1037964 A GB1037964 A GB 1037964A GB 284064 A GB284064 A GB 284064A GB 284064 A GB284064 A GB 284064A GB 1037964 A GB1037964 A GB 1037964A
Authority
GB
United Kingdom
Prior art keywords
line
read
write
lines
pulse
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
GB284064A
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Publication of GB1037964A publication Critical patent/GB1037964A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G11C11/06—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using single-aperture storage elements, e.g. ring core; using multi-aperture plates in which each individual aperture forms a storage element
    • G11C11/06007—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using single-aperture storage elements, e.g. ring core; using multi-aperture plates in which each individual aperture forms a storage element using a single aperture or single magnetic closed circuit
    • G11C11/06014—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using single-aperture storage elements, e.g. ring core; using multi-aperture plates in which each individual aperture forms a storage element using a single aperture or single magnetic closed circuit using one such element per bit
    • G11C11/06021—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using single-aperture storage elements, e.g. ring core; using multi-aperture plates in which each individual aperture forms a storage element using a single aperture or single magnetic closed circuit using one such element per bit with destructive read-out
    • G11C11/06028—Matrixes
    • G11C11/06042—"word"-organised, e.g. 2D organisation or linear selection, i.e. full current selection through all the bit-cores of a word during reading
    • 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
    • G11C11/06—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using single-aperture storage elements, e.g. ring core; using multi-aperture plates in which each individual aperture forms a storage element
    • G11C11/06007—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using single-aperture storage elements, e.g. ring core; using multi-aperture plates in which each individual aperture forms a storage element using a single aperture or single magnetic closed circuit
    • G11C11/06014—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using single-aperture storage elements, e.g. ring core; using multi-aperture plates in which each individual aperture forms a storage element using a single aperture or single magnetic closed circuit using one such element per bit
    • G11C11/06021—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using single-aperture storage elements, e.g. ring core; using multi-aperture plates in which each individual aperture forms a storage element using a single aperture or single magnetic closed circuit using one such element per bit with destructive read-out
    • G11C11/06028—Matrixes
    • G11C11/06035—Bit core selection for writing or reading, by at least two coincident partial currents, e.g. "bit"- organised, 2L/2D, or 3D

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Read Only Memory (AREA)
  • Semiconductor Memories (AREA)

Abstract

1,037,964. Circuits employing bi-stable magnetic elements. RADIO CORPORATION OF AMERICA. Jan. 22, 1964 [Feb. 4, 1963], No. 2840/64. Heading H3B. [Also in Division G4] In a memory including a plurality of conductors each linking a plurality of storage elements, read and write drivers and read and write switches of the corresponding rows and columns are each connected to the appropriate ends of all the lines through diodes poled to present a low impedance to current flow in a single direction between drivers and switch. The arrangement of the Figure shows a plurality of address lines 11, 12, 21, 22 arranged in columns and rows and each linking a plurality of ferrite cores 3, the lines representing a word line in a word organized or two-dimensional memory or may represent an X line or Y line in a coincident current or three-dimensional memory. One of the address lines is selected for read and write operations by closing one of the read or write switches RS 1 , RS 2 , WS 1 , WS 2 and by energizing one of the read or write drivers RD 1 , RD 2 , WD 1 , WD 2 , the switches and drivers being connected to the lines as shown through diodes 5, 6, 7, 8. Line 21 may be chosen for a read operation by closing switch RS 1 so as to render diodes 6 of lines 11, 21 conductive so that when read driver RD 2 is energized a positive pulse passes through unbiased diode 5 of line 21, through forward biased diode 6 and read switch RS 1 to ground. The positive pulse is insufficient to overcome the reverse bias on diode 5 of line 22 so that this line remains unenergized. In order to pass a write pulse through line 21, this pulse passing in the opposite direction through the line to the read pulse, read switch RS 1 is opened and write switch WS 1 is closed, the latter then maintaining lines 11, 21 at ground potential. A pulse from write driver WD 2 is now passed solely through diodes 7, 8 of line 21 to ground through write switch WS 1 . Diode 7 of line 22 remains reverse biased during the write pulse. The switches and drivers may be conventional transistor circuits.
GB284064A 1963-02-04 1964-01-22 Memory Expired GB1037964A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25578163A 1963-02-04 1963-02-04

Publications (1)

Publication Number Publication Date
GB1037964A true GB1037964A (en) 1966-08-03

Family

ID=22969834

Family Applications (1)

Application Number Title Priority Date Filing Date
GB284064A Expired GB1037964A (en) 1963-02-04 1964-01-22 Memory

Country Status (4)

Country Link
BE (1) BE643301A (en)
DE (1) DE1449842A1 (en)
GB (1) GB1037964A (en)
NL (1) NL6400857A (en)

Also Published As

Publication number Publication date
DE1449842A1 (en) 1970-12-17
BE643301A (en) 1964-05-29
NL6400857A (en) 1964-08-05

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