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Hewlett-Packard HP 18C (Clamshell CHAMPION)

Hewlett-Packard HP 18C
Image: Joe Haupt, CC BY-SA 2.0

The Hewlett-Packard HP 18C is a finance calculator with 10 digits precision and algebraic logic. It has 78 keys, and an LCD (liquid crystal) display.

Facts at a glance:

FeatureValue
TypeFinance
Keys78
Precision10
LogicAlgebraic
Display typeLCD
Display size137
PrinterIR ext
Length165mm
Width191mm
Thickness13mm
Weight227g
Year introduced1986
Year discontinued1988

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.

Hold down ON button and press fourth key on top row of right-hand keypad, then choose test from menu (use EXIT to leave test and go back to menu). Use ON and fifth key on top row to run a test sequence. Use ON key and third key on top row to reset calculator after tests.

Replacements:

If you have a Hewlett-Packard HP 18C that is no longer working, you can consider replacing the calculator with a modern equivalent. We suggest the following current models as possible replacements:

See other calculators by Hewlett-Packard