| 摘要 |
<p>A manually alterable digital display device capable of displaying the numerals zero to 9 comprises a background panel (10) having an optic or brightly coloured face (11) and a one-piece foreground panel (12) adjacent to and parallel with the background panel. The one-piece foreground panel has seven elongate windows or openings which expose seven corresponding segments (13a-13g) of the background panel. Each of the windows is covered by a flap (14a-14g) which is integrally formed with the foreground panel and is hinged thereto. The desired numerals are formed by opening and closing the appropriate flaps (14a-14g) to expose the appropriate corresponding segments (13a-13g) thereby displaying the desired numerals. Two or more such digital display units can be arranged side by side to display the numerals 10 to any desired number.</p> |
