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| إشــارة | |||
| إشارة ؛إشارة تنبيهية | |||
| أشارة | |||
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| تأشير الاشارات في الاتصالات عن بعد | |||
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Signal : 114 phrases in 12 subjects |
| Automatic control | 7 |
| Electronics | 17 |
| Lighting other than cinema | 1 |
| Magnetics | 3 |
| Power lines | 16 |
| Radio | 27 |
| Rail transport | 22 |
| Sound recording | 1 |
| Telecommunications | 1 |
| Telegraphy | 15 |
| Telephony | 1 |
| Vacuum tubes | 3 |