Generally which button of the mouse is used for OK?

......... is fast speed printer

LCD stands for-

The general method for to input the text and numerical data in computer is by ..............

Output devices make it possible to................

Hard copy of a document is..............

Which of following groups have only input devices?

Which of following groups have only output devices?

Any data and instruction entered in the memory of a computer is-

To make the number pad act as a directional arrow, we press..............