| 摘要 |
1,027,308. Electric selective signalling. COMMISSARIAT A L'ENERGIE ATOMIQUE. Jan. 18, 1963 [Jan. 23, 1962], No. 2380/63. Heading G4H. A number in the range 0 to 9 is represented by changing the visual appearance of a corresponding number of areas, the areas being arranged so that the number of changed areas may be perceived at a glance without counting. Five lamps, selected through diodes, may illuminate nine apertures constituting the areas. |
