EKBM D3

© Sergei Frolov EKBM D3.

© Sergei Frolov Close-up of the EKBM D3 keyboard.

© Sergei Frolov A 2nd keyboard variant.

This calculator is big, heavy, with 14 nixie tubes. It works!
Key at top left (backward N) is identical with modern key <-> (exchange registers X and Y).
CK = clear display (X) register.
A = store display (X) register into memory.
(1) : (memory + display) -> memory, display
0,2,4,6: set dicimal place (calculator has fixed comma)
5/4: used for rounding (enable/disable).

© Sergei Frolov

© Sergei Frolov