From 1961, Inge Borchardt (1935, Stettin, Germany, today Szczecin, Poland) worked at the Deutsches Elektronen-Synchrotron (DESY) in Hamburg where she was in charge of the analogue computer centre. In 1966, she used the EAI 231R analogue computer to produce drawings that she exhibited in Hamburg’s Laeiszhalle. The drawings presented here combine differential equations or oscillation equations. They were created by continuously changing variables. Borchardt also applied Lissajous equations to some of these drawings.