1.1.3 Input Devices

What is the purpose of a microphone?

• To record video footage.
• To amplify sound for live performances.
• To filter out background noise.
• To convert sound into electrical signals.

What is the purpose of a flatbed scanner?

• To store physical documents and images.
• To print physical documents and images.
• To digitize physical documents and images.

• To create 3D models of objects.

What technology is often used to input the answers or marks that a candidate has made on a multiple choice test paper?

Which of the following is not a type of card reader?

• Magnetic stripe reader

• Smart card reader

• NFC reader

• Barcode reader

What does NFC mean?

Which of the following devices is both input and output?

• Speaker
• Printer
• Touchscreen
• Keyboard

What is used to validate a barcode?

What does QR stand for?

• Quick Reference
• Quick Reaction
• Quick Response
• Quality Response

Organize these options into the right categories

Groups:

(a) Biometric

,

(b) Non Biometric

• Voice

• Facial image

• Pattern lock
• Hand writing

• Fingerprint

• Eye colour

• Tattoo

• Iris

When a picture is taken on a digital camera, light intensity is measured using a ​ (a)   sensor, while colour is determined by a ​ (b)   filter.

• photosite
• Bayer
• prism
• lens
• Turing
• Brown