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Casio fx-83ES (Natural Display)

Casio fx-83ES

The Casio fx-83ES is a scientific calculator with 10 digits precision and formula input logic. It has 249 functions, 50 keys, and an LCD (liquid crystal) display. The power source is AAA batteries. The calculator was manufactured in China. Note: Bump in case to accomodate relatively large AAA battery A sample of this calculator is held in the calculator.org collection.

Facts at a glance:

FeatureValue
TypeScientific
Functions249
Keys50
Precision10
LogicFormula
Display typeLCD
Display size96
Length160mm
Width80mm
Thickness14mm
Weight110g
Power Consumption0.000200W
Power SourceAAA
CountryChina
Original price$10
Est. current value$8
Year introduced2005
Year discontinued2010

User Manual

You can download the Casio fx-83ES manual from the manuals website. If this doesn't work, you can also try this alternative download link.

Diagnostics

Note that diagnostic tests generally delete any data on the calculator. Be sure to back up any important information held in the calculator before running these tests.

While holding SHIFT and 7 keys (or just SHIFT key for early models) press the ON key. Pressing the SHIFT key shows 5 display test patterns in turn, followed by the ROM version. Press AC to get the contrast test screen, and press AC again to get to the keypad test - the numbers then increase as each key is pressed in the correct order (omitting the ON key which exits test mode).

Replacements:

If you have a Casio fx-83ES that is no longer working, you can first try replacing the AAA battery. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent. We suggest the following current model as a replacement:

See other calculators by Casio