| 摘要 |
The invention relates to a device enabling arithmetic calculations, said device being characterized in that it includes a series of basic parts (1) that are hinged together by means of connection mechanisms enabling a relative angular movement of each basic part (1) relative to an adjacent basic part (1) so as to enable each basic part (1) to take a predetermined number of positions that each correspond to at least one of the surfaces of said device. Said device is also characterized in that each of said surfaces comprises a separate pattern (3). |
