calculator.org

the calculator home page

Sears 728.58821

Sears 728.58821
Image: Joe Haupt, CC BY-SA 2.0

The Sears 728.58821 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 4 functions, 17 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 3xAA. Note: Made by Bowmar.

Facts at a glance:

FeatureValue
TypeArithmetic
Functions4
Keys17
Precision8
LogicAlgebraic
Display typeLED
Length158mm
Width77mm
Thickness32mm
Weight142g
Power Source3xAA
Year introduced1973
Year discontinued1974

Replacements:

If you have a Sears 728.58821 that is no longer working, you can first try replacing the 3xAA 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 Sears