Answer:

abacus

AnswerCrossword Clue
ABACUSAncient calculator
ABACUSEarly calculator
ABACUSAncient computer
ABACUSYou can count on it
ABACUSChinese calculator
ABACUSEastern summer
ABACUSBeaded calculator
ABACUSAncient adder
ABACUSGadget you can count on?
ABACUSLow-tech calculator
ABACUSArithmetic device
ABACUSCalculator precursor
ABACUSItem with beads
ABACUSCount on it
ABACUSSomething you can still count on
ABACUSBasic adding machine
ABACUSCalculator
ABACUSBasic computer
ABACUSCalculator of a sort
ABACUSCalculator with beads
ABACUSLow-tech counting device
ABACUSInstrument made from bamboo
ABACUSCalculator's ancestor
ABACUSCalculator that has no on-off switch
ABACUSCounter-intuitive calculator?
ABACUSOriental calculator.
ABACUSReckoner.
ABACUSAncestor of the comptometer.
ABACUSCalculating device.
ABACUSRudimentary calculator.
ABACUSDevice for doing arithmetic.
ABACUSDevice for calculating.
ABACUSComputer, old style.
ABACUSSimple computer.
ABACUSNonelectronic computer.
ABACUSAntiquity's computer.
ABACUSType of calculator
ABACUSEastern computer
ABACUSCalculator's cousin
ABACUSNon-electronic calculator