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Brother 813SR

The Brother 813SR is an arithmetic calculator with 8 digits precision and algebraic logic. It has 13 functions, 29 keys and one of the early LCD (liquid crystal) displays which incorporated a yellow filter. The power source is 2xAA batteries. The calculator was manufactured in Japan.

Facts at a glance:

Type Arithmetic
Functions 13
Keys 29
Precision 8
Logic Algebraic
Display type YLCD
Display size
Length 144 mm
Width 77 mm
Thickness 22 mm
Weight 127 g
Power Source 2xAA
Country Japan
Original price unknown
Est. current value unknown
Year introduced 1979
Year discontinued

See other calculators manufactured by Brother.