Question

The double buffer is used for _________

(a) Enabling retrieval of multiple bits of input

(b) Combining the input and output operations

(c) Extending the buffer capacity

(d) None of the mentioned

I have been asked this question in an interview for job.

I need to ask this question from Serial Port topic in portion Input/Output Organisation of Computer Architecture

Answer 1

The correct option is (a) Enabling retrieval of multiple bits of input

The best I can explain: None.