RBO
There are two variants of this model known. Both made in early 90th. Most likely it was manufactured by a small company. It contains 1 memory register.
Brand:
RBO
Calculator
Type:
Desktop Calculator
Series:
Other
Factory / Plant:
Other
Display Type:
VFD type II (All the digits in a single round tube)
Power Source:
External Power, 220V AC
Entry Method:
Algebraic Notation
Manufactured In:
U.S.S.R. (Soviet Union)
Functional Specification:
Standard Four Functions (+-*/), Percentage (%), Sign change /-/, Reciprocal (1/x), Operations with Memory
Circa (year):
1992...
Programmable:
Non-Programmable