* dk'tronics Real Time Clock
* [[dk'tronics Mouse Interface]]
* Dobbertin [[EPROM 224]] Box
* Dobbertin Real Time Clock
* Dobbertin ROM blower[[Universeller EPROM Programmer 4004]]* Dobbertin [[DobbertinHD20]] HD20 Hard Disk
* [[EMR MIDI Interface]]
* Fischertechnik robot