_______ is a predefined set of instructions.

______ is a volatile form of memory.

_______ is a example of impact printer.

_______is a direct access storage medium.

In hard disk , each track is subdivided into number of _______.

________ is the time delay between a request to an electronic system, and the access being completed or the requested data returned.

________ have the ability to perform all of the actions independently.

In Optical disk , the operations are done by _______.

______ data cant be erased by user.

_____ are capable of performing arithmetic operation.