COMPUTER FUNDAMENTALS

COMPUTER PERIPHERALS

DIGITAL CAMERAS AND CAMCORDERS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Made up of a matrix of filled-in dark squares on a light background
A
Barcode
B
QR-code
C
CT-scan
D
Pixels
Explanation: 

Detailed explanation-1: -QR code is made up of a matrix filled-in dark squares on a light background. This can hold over 7000 digits while normal barcodes can hold up to 30 digits. So this gives greater scope for the storage of information.

Detailed explanation-2: -A pointing device is any human interface device that allows a user to input spatial data to a computer.

Detailed explanation-3: -Resolution is the number of horizontal and vertical pixels in a display device; a higher resolution uses a greater number of pixels and provides a sharper image.

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