GB1158909A - Improvements in or relating to circuit components for performing logic functions. - Google Patents
Improvements in or relating to circuit components for performing logic functions.Info
- Publication number
- GB1158909A GB1158909A GB3955566A GB3955566A GB1158909A GB 1158909 A GB1158909 A GB 1158909A GB 3955566 A GB3955566 A GB 3955566A GB 3955566 A GB3955566 A GB 3955566A GB 1158909 A GB1158909 A GB 1158909A
- Authority
- GB
- United Kingdom
- Prior art keywords
- film
- output
- function
- circuit
- 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
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
- H03K19/16—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using saturable magnetic devices
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Hall/Mr Elements (AREA)
Abstract
1,158,909. Logic circuits using magnetic elements. SIEMENS A.G. 5 Sept., 1966 [6 Sept., 1965], No. 39555/66. Heading H3B. A logic circuit component includes a plurality of magnetic thin film elements having uniaxial magnetic anisotropy, each film having supply leads electrically connected to the film and a control input for providing an external magnetic control field to the film, the arrangement being such that a voltage is developed in the film in a direction transverse to the supply leads due to the transverse Hall effect in the presence of the control field. The logical function performed depends on the angular relationships between the control field, the easy axis of the film and the supply leads of the plurality of films. In the drawings M is the easy axis of film 4, line 3 is the supply lead, lines 1 and 2 are the control lines and 5 is the output lead. An output is produced only when the resultant magnetization in the film lies at an angle, other than 90 degrees, to line 3. Figs. 4 shows a circuit for performing the disjunction (OR) function. An input on either line 1, 2 rotates the magnetization vector through 45 degrees and an output is produced. If the remanent magnetization vectors in the two films of Fig. 4 are opposed the device performs the antivalence (EXCLUSIVE-OR) function. The function performed by the device of Fig. 6 is equivalence (parity), an output being produced only if the inputs to both lines 1, 2 are the same. Fig. 7 (not shown) includes two films arranged in the same way as film II in Fig. 6. An output is produced unless inputs are supplied to both lines 1, 2 (Sheffer function). In Fig. 8 an additional film is provided, without a control line, which converts the preceding embodiment into a conjunction (AND) circuit. The circuit of Fig. 4 may be similarly modified by provision of an additional uncontrolled film, in this case having its easy axis parallel to that of film II in Fig. 6. This circuit gives an output only in the absence of any input (Pierce function).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES0099261 | 1965-09-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1158909A true GB1158909A (en) | 1969-07-23 |
Family
ID=7522098
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1042569A Expired GB1158910A (en) | 1965-09-06 | 1966-09-05 | Improvements in or relating to circuit components for performing logic functions. |
| GB3955566A Expired GB1158909A (en) | 1965-09-06 | 1966-09-05 | Improvements in or relating to circuit components for performing logic functions. |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1042569A Expired GB1158910A (en) | 1965-09-06 | 1966-09-05 | Improvements in or relating to circuit components for performing logic functions. |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE686498A (en) |
| DE (1) | DE1251805B (en) |
| GB (2) | GB1158910A (en) |
| NL (1) | NL6612528A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005041411A1 (en) * | 2003-10-13 | 2005-05-06 | Abdellah El Mourabet | Dynamic cycles and sequencers, based on binary trees with magnetic nodes, the rapidity of execution, the operating reliability and the durability of use of which are optimised |
| US7379321B2 (en) | 2005-02-04 | 2008-05-27 | Hitachi Global Storage Technologies Netherlands B.V. | Memory cell and programmable logic having ferromagnetic structures exhibiting the extraordinary hall effect |
-
0
- DE DES99261A patent/DE1251805B/de active Pending
-
1966
- 1966-09-05 GB GB1042569A patent/GB1158910A/en not_active Expired
- 1966-09-05 GB GB3955566A patent/GB1158909A/en not_active Expired
- 1966-09-06 BE BE686498D patent/BE686498A/xx unknown
- 1966-09-06 NL NL6612528A patent/NL6612528A/xx unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005041411A1 (en) * | 2003-10-13 | 2005-05-06 | Abdellah El Mourabet | Dynamic cycles and sequencers, based on binary trees with magnetic nodes, the rapidity of execution, the operating reliability and the durability of use of which are optimised |
| US7379321B2 (en) | 2005-02-04 | 2008-05-27 | Hitachi Global Storage Technologies Netherlands B.V. | Memory cell and programmable logic having ferromagnetic structures exhibiting the extraordinary hall effect |
Also Published As
| Publication number | Publication date |
|---|---|
| BE686498A (en) | 1967-03-06 |
| GB1158910A (en) | 1969-07-23 |
| NL6612528A (en) | 1967-03-07 |
| DE1251805B (en) |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |