| 摘要 |
The present invention provides apparatus for converting digital electrical signals representative of alpha-numeric characters and other symbols into a particular pattern of dots symbolic of the character or symbol as used, for example, in the Braille alphabet. The dot pattern is established by the tips of a plurality of stems which are raised and retracted in respect of a given surface by operation of electromagnetically response plunger cores slidably positioned in cavities which communicate with wells within which the stems slide. The ends of the cores within the cavities are bevelled. When a core is retracted from the cavity, the associated stem falls by gravity to its retracted position and is maintained in position with its end slightly spaced from the extreme bottom of the cavity by a stop member. This construction enables the bevelled ends of the cores to engage the ends of the stems and raise the stems when a write function is to be effected, after which the stems rest on the surface of the associated cores with their corresponding tips extending above the given surface.
|
