there is no such device as an analog computer
no
analog computer is mechanic computer (see Antikythera mechanism) and digital computer works with power and circuits.
An Analog is just dialog inside the computer which that was very old and not many features and the digital computer is like a tablet pc and a touch screen. AKA:analog- a variable signal that is...
analog- a variable signal that is continuous in time and amplitude. digital- data technology that uses discrete values.