Osborne 1 is the first commercially successful portable microcomputer, launched on April 3, 1981 by the American company Osborne Computer Corporation. On one side of the case there was a carrying handle, on the other a keyboard, structurally made in the form of a hinged lid, under it there was a monochrome CRT display measuring five inches diagonally (13 cm) and two 5.25-inch floppy disk drives. 3375 tris 4k textures