calculator.org

the calculator home page

M.OFFICE 28SR

The M.OFFICE 28SR is an arithmetic calculator with 8 digits precision and algebraic logic. It has 8 functions, 22 keys, and a VFD (vacuum fluorescent) display. The power source is 2xAA. The calculator was manufactured in Taiwan.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions8
Keys22
Precision8
LogicAlgebraic
Display typeVFD
Length131mm
Width76mm
Thickness35mm
Power Consumption0.300000W
Power Source2xAA
CountryTaiwan
Year introduced1975
Year discontinued1975

Replacements:

If you have a M.OFFICE 28SR that is no longer working, you can first try replacing the 2xAA batteries. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent. We suggest the following current models as possible replacements:

See other calculators by M.OFFICE