Teaching device
US4355984A · kind A · utility
27Cited by
3References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1980 |
| Grant date | Oct 26, 1982 |
| Priority date | — |
| Expiry date | Mar 25, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09B7/06
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A teaching device includes a reading station provided with six on-off switches for automatically sensing a text key encoded as a pattern of punched holes in a text book. The teaching device automatically generates an answer key from the text key by means of a pseudo-random number generator which is run using the text key as a seed. The text book includes a number of multiple choice questions in which the correct answer corresponds to the answer designated in the answer key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.