2 layers100 × 52.5 mm

Mk 52 keyboard
Fyfar/mk_52_keyboard
KiCAD keyboard layout for MK-52 soviet calculator
33 parts1CERN-OHL-P-2.0
KiCad boards from 1 GitHub repository tagged “elektronika”, the most starred first; open any of them in PCBKit.

Fyfar/mk_52_keyboard
KiCAD keyboard layout for MK-52 soviet calculator