| 摘要 |
The invention relates to an object (26) comprising a display surface (29) for displaying variable data, which is largely independent of an electrical power supply unit. Said object (26) is provided with two manually actuated pressure generators (27, 28) for optionally displaying data, a medium (4) being reversibly transferred from a reservoir (31) into a receiving space (30) that is visible to the viewer by impinging said reservoir (31) with pressure. The data continues to be displayed until the medium (4) starts flowing back by applying pressure. |
