GB1097401A - Improvements in or relating to computer circuit demonstrating devices - Google Patents
Improvements in or relating to computer circuit demonstrating devicesInfo
- Publication number
- GB1097401A GB1097401A GB969764A GB969764A GB1097401A GB 1097401 A GB1097401 A GB 1097401A GB 969764 A GB969764 A GB 969764A GB 969764 A GB969764 A GB 969764A GB 1097401 A GB1097401 A GB 1097401A
- Authority
- GB
- United Kingdom
- Prior art keywords
- socket
- terminating
- circuits
- gate circuits
- transistor gate
- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/183—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for circuits
- G09B23/186—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for circuits for digital electronics; for computers, e.g. microprocessors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Optimization (AREA)
- Algebra (AREA)
- Computational Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mathematical Analysis (AREA)
- Computer Hardware Design (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Instructional Devices (AREA)
Abstract
1,097,401. Educational appliances. LANELECTRONICS Ltd. March 8, 1965 [March 6, 1964], No. 9697/64. Heading G5G. An apparatus for demonstrating computer circuits comprises a set of transistor gate circuits T having input and output terminal sockets 3, 4, respectively, for co-operation with detachable cords (not shown) by which selected transistor gate circuits can be interconnected to stimulate digital computer circuits, in combination with a dial switch 8 adapted to generate trains of pulses. In the embodiment shown there are fifteen transistor gate circuits T, mounted on the underside of a panel 1 in five columns and three rows with the input and output terminal sockets 3, 4 mounted on the upper surface of the panel. In each gate circuit the transisitor emitter is connected to a common grounded rail terminating in a socket 5. The collector is connected through a lead resistance to a common negative rail terminating in a socket 6 and the base through a lead resistance to a common positive bias rail terminating in a socket 7. The dial 8 is arranged to transmit impulses by opening a pair of normally-closed contacts, any number of times from one to ten, and connected between the negative rail and one end of a voltage divider the other end of which is connected to ground. The voltage divider comprises two resistors in series the junction between them being connected to a number of terminal sockets 9 which may be connected by said cords to the input terminals 3. The apparatus is further provided with a set of lamps 10, one for each column, having one end connected to a socket 5 and the other terminating in a socket 11 which may be connected to the output of a selected gate. A set of pushbuttons 12 are provided for resetting the gate circuits. Each column is arranged so that with suitable components interconnecting appropriate sockets a digital store may be formed and also be capable of providing a buffer between the digital store and one of the indicating lamps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB969764A GB1097401A (en) | 1964-03-06 | 1964-03-06 | Improvements in or relating to computer circuit demonstrating devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB969764A GB1097401A (en) | 1964-03-06 | 1964-03-06 | Improvements in or relating to computer circuit demonstrating devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1097401A true GB1097401A (en) | 1968-01-03 |
Family
ID=9877022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB969764A Expired GB1097401A (en) | 1964-03-06 | 1964-03-06 | Improvements in or relating to computer circuit demonstrating devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1097401A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3728534A (en) * | 1971-02-10 | 1973-04-17 | Philips Corp | Constructable logic system |
| CN104599569A (en) * | 2014-12-25 | 2015-05-06 | 惠州学院 | Demonstrating experiment device for NAND gate circuit |
-
1964
- 1964-03-06 GB GB969764A patent/GB1097401A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3728534A (en) * | 1971-02-10 | 1973-04-17 | Philips Corp | Constructable logic system |
| CN104599569A (en) * | 2014-12-25 | 2015-05-06 | 惠州学院 | Demonstrating experiment device for NAND gate circuit |
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