Compos Hobby Box


Collage of colored cardboard
28 × 37.5 cm

“On the next sheet you will find a design generated by the ELX-8 computer of Utrecht State University.
It was created according to an aesthetic theory.
Each design is unique.
The number of possibilities of this theory is 4,9 … 42.
How to work out this design.
Put the yellow sheet of cardboard under the design, and prick with the pricker in the middle of each of the Y1 symbols.
Connect the four holes in the yellow cardboard with a thin pencil line, in such a way that you obtain a rectangle.
Cut out this rectangle with the razor blade.
Do the same with the Y2 symbols, and so on.
Do the same with the blue cardboard and the B symbols, the red cardboard and the R symbols.
Now place the black cardboard under the design and prick all the holes again to mark the places where the rectangles have to be glued.
When you start glueing, the following difficulty will arise:
A part of a planned rectangle coincides with a part of another one.
In this case the computer suggests the next solution.
Let the rectangle dominate which, if it were covered by the other one, would be mutilated in such a way that a spectator would not have any idea of its original proportions.
This time again use the pattern to determine where to locate the blocked-out section of the underlying rectangle.
For this composition you need the following amount of cardboard:
Yellow 6.0 + 16.0 + .0 + 2.0 = 24.0 cm2
Red .0 + 1.0 1.0 cm2
Blue = 111.0 cm2

[Compos 68, Compos Hobby Box, instruction manual, computer sheet, 1969, MSU Zagreb]”

Source: [Rosen, 2011]

Created 1969
Rights: ["MSU":Institution@164], Zagreb

Collage of colored cardboard
28 × 37.5 cm


Pattern with stylus
28 × 37.5 cm Electrologica X8, plotter


31 × 37.5 cm