 |
|
data signal : 86 phrases in 18 subjects |
| Air defense | 1 |
| Astronautics | 1 |
| Automated equipment | 4 |
| Computer networks | 3 |
| Computers | 3 |
| Electronics | 1 |
| Information technology | 7 |
| Mass media | 6 |
| Microelectronics | 1 |
| Military | 6 |
| Nautical | 5 |
| Navigation | 2 |
| Oil and gas | 1 |
| Programming | 15 |
| Radioengineering | 1 |
| Space | 1 |
| Technology | 6 |
| Telecommunications | 22 |