Abstract: This control system for a roller-blind or the like comprising swivel blades coupled to a master blade carrying at one end a stud adapted, during its downward movement, to travel in a slide groove disposed behind a rocker and, during its upward movement, to engage both the slide groove, and the rocker, this control system comprises a microcomputer having stored in its non-volatile memory a control program of which the instruction groups are adapted to control the stud movements and the blind movement in relation to four predetermined stop points with respect to the rocker.