 |
| |||
| dual recording | |||
| binary recording | |||
| binary notation | |||
| |||
| binary notation | |||
| двоичная запись: 20 phrases in 10 subjects |
| Astronautics | 2 |
| Communications | 1 |
| Electronics | 2 |
| Information technology | 4 |
| Mass media | 1 |
| Military | 1 |
| Natural resourses and wildlife conservation | 1 |
| Programming | 1 |
| Technology | 5 |
| Telecommunications | 2 |