GB1071212A - Improvements in and relating to logic circuits - Google Patents
Improvements in and relating to logic circuitsInfo
- Publication number
- GB1071212A GB1071212A GB2102564A GB2102564A GB1071212A GB 1071212 A GB1071212 A GB 1071212A GB 2102564 A GB2102564 A GB 2102564A GB 2102564 A GB2102564 A GB 2102564A GB 1071212 A GB1071212 A GB 1071212A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- state
- logic circuits
- circuit
- relating
- 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
- 239000003990 capacitor Substances 0.000 abstract 1
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
- H03K19/08—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using semiconductor devices
- H03K19/082—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using semiconductor devices using bipolar transistors
- H03K19/084—Diode-transistor logic
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Logic Circuits (AREA)
Abstract
1,071,212. Logic circuits. LE MATERIEL ELECTRIQUE S.W. May 21, 1964 [May 30, 1963], No. 21025/64. Heading H3T. A plurality of AND circuits, each consisting of a bias source and diodes connected in the same sense to inputs, is arranged as an OR circuit by joining the outputs through respective resistances directly to the base of a common transistor connected to a bias source, the OR output being taken from the collector. In the Figure, the transistor 4 will conduct if voltage appears at one of the points 11, 12 or 13, which will happen if all the a inputs leading to this point are in state 1. The transistor will be blocked if 11, 12 and 13 are all in state 0, i.e. if at least one a input of each AND circuit is in state 0. An NPN transistor can be used, with reversal of the polarities of the diodes and bias sources. The resistors 5 can be shunted by capacitors.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR936513A FR1366186A (en) | 1963-05-30 | 1963-05-30 | Logic circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1071212A true GB1071212A (en) | 1967-06-07 |
Family
ID=8805007
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2102564A Expired GB1071212A (en) | 1963-05-30 | 1964-05-21 | Improvements in and relating to logic circuits |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE646718A (en) |
FR (1) | FR1366186A (en) |
GB (1) | GB1071212A (en) |
LU (1) | LU45875A1 (en) |
NL (1) | NL6405812A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1116471A (en) * | 1964-09-03 | 1968-06-06 | English Electric Computers Ltd | Electric pulse delay and regeneration circuits |
-
1963
- 1963-05-30 FR FR936513A patent/FR1366186A/en not_active Expired
-
1964
- 1964-04-15 LU LU45875D patent/LU45875A1/xx unknown
- 1964-04-17 BE BE646718D patent/BE646718A/xx unknown
- 1964-05-21 GB GB2102564A patent/GB1071212A/en not_active Expired
- 1964-05-25 NL NL6405812A patent/NL6405812A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
LU45875A1 (en) | 1964-06-15 |
FR1366186A (en) | 1964-07-10 |
NL6405812A (en) | 1964-12-01 |
BE646718A (en) | 1964-08-17 |
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