Braille cell includes frame (2) for controlling braille cell, touch panel (3) and touch pin (4), each touch pin is enclosed in cavity in Trackpad, in this way, it can be from low level, wherein touch pin does not interfere the surface for protruding from touch tablet, arrives eminence, and wherein the top of touch pin plate is prominent. A kind of pressure applies component (10) and is moved to specific position by mobile device (11), so that specific touch pin may or may not be moved to a high position according to the applicator member. The applicator member, component, one end can be displaced, and by the first gearshift (12), be transversely to the machine direction direction, so it may place one end of rod member in first or second position, and the possible displacement means (11) for being, with the end for the second applicator member, in two possible positions that end one of has used, in longitudinal direction, high position is put or be not to such touch pin.
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