MOSCOW
Home
to C2
Museum of Soviet Calculators on the Web


Stats...



1979
1980

size

241 mm
185 mm
77 mm
1 kg




400 rubles




220V, 50Hz, 10W
8 digit green fluorescent.



Factories...

factory mark

EPOS 73A

EPOS 73A(c) Sergei Frolov

This machine has a natural comma.

Contributor: Poor Mike
EPOS 73A
Contemporary advertisment.



Quirks

This machine, like many of its day, erroneously returns the negative square root of the positive of any negative number as the square root of that number (ie: -2 as the square root of -4, instead of ERROR).

The naming of this machine is somewhat confusing, as this machine appears labeled both EPOS-73A and Type B3-11. Please read details on the B3-11 page.





Related Machines...


B3-11

Elektronika B3-11

These machines can both carry "Type B3-11" designation. It's all rather strange!

MOSCOWMuseum of Soviet Calculators on the Webe-mail webmaster
Home
Home
to C2
C2


The content of Museum of Soviet Calculators (on the Web) is copyright © 1997-2001 Andrew Davie & contributors.
Unless indicated to the contrary, permission is granted for private non-commercial use of images and text.
Last modified on