COMPUTER FUNDAMENTALS

COMPUTER ARCHITECTURE

INPUTOUTPUT DEVICES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which device is both and input and an output device
A
A touchscreen
B
A scanner
C
A keyboard
D
A light
Explanation: 

Detailed explanation-1: -The correct answer is Touch Screen. Computer Input and Output Devices: The functioning of a computer system is based on the combined usage of both input and output devices.

Detailed explanation-2: -The various devices, such as smartphones, information kiosks, computers, laptop displays, tablets, and cash registers, all have a touch screen. Instead than using touch-sensitive input, some touch screens use a grid of infrared beams to detect the presence of a finger.

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