Crossword puzzle clue "primitive calculators"

Here are the possible solutions for primitive calculators clue

Answer
Clue
Relevancy
abaci
Clue
Primitive calculators
Early calculators
Ancient calculators
Precalculator calculators
Beaded calculators
Old calculators
Low-tech calculators
Manual calculators
Definition
ABACUS, (Latin) a counting frame using beads

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