Crossword puzzle clue "ancestor of d'oh"

Here are the possible solutions for ancestor of d'oh clue

Answer
Clue
Relevancy
abacus
Clue
Ancestor of the adding machine
Computer ancestor
Calculator's ancestor
Ancestor of a calculator
Definition
(Latin) a counting frame using beads
adam
Clue
Everyone's ancestor
Common ancestor?
Noah ancestor
Everyone's ancestor, ostensibly

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