 |
| digital-to- analog conversion: 23 phrases in 12 subjects |
| Air defense | 1 |
| Aviation | 1 |
| Business | 1 |
| Communications | 2 |
| Earth sciences | 1 |
| Electronics | 4 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Information technology | 1 |
| Metallurgy | 2 |
| Space | 3 |
| Technology | 5 |
| Telecommunications | 1 |