| Year | Model | Remarks |
|---|---|---|
| 1980 | Phillips G7000 + Module 9 | 100 steps, no save |
| 1982 | Commodore VC-20 + RAM Extention | turned out to be defect and changed into |
| 1982 | EACA Video Genie | TRS-80 compatible |
| 1984 | Casio FX-602p + FA-2 | Still in use |
| 1986 | Atari 520ST | Got one of the first ones delivered in Flensburg |
| 1987? | PC compatible with 80286 cpu | |
| 1990? | PC compatible with 80386 cpu | |
| PC compatible with 80486 cpu | ||
| 1996? | PC compatible with dual PentiumPro cpu at 200MHz | |
| 1987 | IBM System/370 | |
| 1998? | Alpha 21164a based computer with 533 MHz | |