With reference to NC machines, which of the following statements is wrong
(a) Both closed-loop and open-loop control systems are used
(b) Paper tapes, floppy tapes and cassettes are used for data storage
(c) Digitizers may be used as interactive input devices
(d) Post processor is an item of hardware
This question was posed to me during an internship interview.
I would like to ask this question from Programme for Four Bar Mechanism in division Computer Aided Analysis and Synthesis of Mechanisms of Machine Dynamics