Question

Which among the following is the most common device that accepts letters, numbers and command from a user?

A: Optical Mouse
B: Sensitive Screen or touch screen
C: Keyboard OD: USB​

Answer 1

Which among the following is the most common device that accepts letters, numbers and command from a user?

C: Keyboard OD: USB

Answer 2

The answer is option 'B) Sensitive screen or touch screen.'

• An optical mouse and a USB keyboard are input devices that do not take our commands. They only help us input data and instructions to the computer so that it can process them and give us an output.

• Input devices refer to the parts of the computer which help us to provide data to the computer.

• Output devices are those which give us the final result of our instructions.

• The sensitive screen or the touch screen takes our commands and performs the functions. By touching the screen, we can insert numbers and letters and also give commands to the device.

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