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Sharp EL-640 (VOICE SYNTHESIZED CLOCK & CALCULATOR)

The Sharp EL-640 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 26 keys, and an LCD (liquid crystal) display. The power source is 4xAA. Note: time

Facts at a glance:

FeatureValue
TypeArithmetic
Functions5
Keys26
Precision8
LogicAlgebraic
Display typeLCD
Length154mm
Width77mm
Thickness20mm
Power Source4xAA
Year introduced1978

Replacements:

If you have a Sharp EL-640 that is no longer working, you can first try replacing the 4xAA 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 Sharp