Abstract: The invention relates to a keyboard for desktop and portable computers. The keys of the keyboard are disposed as a single block of rows of juxtaposed keys, laid out on top of one another, in that all numeric keys are grouped in a single compact zone integrated to the block. Thus, keys such as punctuation, calculation and direction keys are grouped by family of function, in compact zones integrated to the block. The invention can be used for computers and portables.

Abstract: An implantable osteosynthesis device is made up of two portions, a so-called fixed portion and a movable portion, which can move relative to each other and are provided with coupling elements capable of blocking the translation of the portions so as to obtain a clamping effect on the bone, wherein the fixed portion has an elongated element (1) and the movable portion has a body (5) forming a sleeve (6) capable of sliding along the elongated element. The coupling of the invention comprise one-way combined locking arrangements (2, 10-13) for allowing the relative displacement of the fixed and movable portions in a single direction adapted for providing the clamping effect, and for locking the portions so as to prevent the translation thereof in the other direction.