Which input device is used to read barcodes and QR codes?
A. Keyboard
B. Mouse
C. Joystick
D. Barcode scanner
Answer:D
Which input device is used to read barcodes and QR codes?
A. Keyboard B. Mouse C. Joystick D. Barcode scanner
Explanation: A barcode scanner is an input device that is used to read barcodes and QR codes. It works by scanning the code and converting it into a digital format.