| 摘要 |
Transparent hermetical boxlike chamber, with slightly protruded cover 1 and bottom 2, is partially filled with conductive liquid 7, so that flat bubble is formed. On the outside of the transparent cover 1 are printed either the letter symbols or the numerical ones 9 and from its outside, in the same (bed die) arrangement, are put on transparent electrodes 3. Each of these electrodes has a belonging line 5 that ends in output 10 outside of chamber. Among the electrodes 3, extend the rib-like furnishes 4 that cover lines 5 toward electrodes. Over the whole bottom surface 2, is put one common electrode 6 to which outside output 11 belongs. By connecting to one-way voltage between outputs 11 of the common electrode and electrodes 3 and by inSclining the chamber, bubble 8 can be brought under any electrode 3 and with this its output is ceased or rapidly reduces flow of electrical current, while rib-like furnishes 4 provide almost leap-like stirring of bubbles.This electrical condition means indication of choice, i.e. typing in the symbols, where by means of the additional key, the confirmation of the current electrical condition is checked, before the bubble is moved into new position. The selector can be used as a numerical (bed die 3 x 4 of the symbol, i.e. characters) or letter-like (bed die 6x5 of the symbol-letter) keyboard, dimensions of which, for the height of the character of 1.6 mm come out to be only 14x12 mm. |
