mechanical calculator
mechanical machine for arithmetic operations for absolute calculators
Pascal's calculator
mechanical calculator
Napier's bones
mathematical instrument invented by John Napier
The Millionaire
first commercially successful mechanical calculator that could perform a direct multiplication
transistor computer
type of a computer
Comptometer
mechanical calculator
Antikythera mechanism
ancient analog computer designed to calculate astronomical positions
pinwheel calculator
type of mechanical calculator
Lehmer sieve
computing device
sector
mechanical calculator
adding machine
class of mechanical calculator, usually specialized for bookkeeping calculations
analytical engine
proposed mechanical general-purpose computer, designed by Charles Babbage
difference engine
Automatic mechanical calculator designed to tabulate polynomial functions
difference engine
Automatic mechanical calculator designed to tabulate polynomial functions
Stepped Reckoner
digital mechanical calculator
Heath Robinson
machine used by British codebreakers