Chapter 4 - Input Devices (1.1)

Question 1

What is an input device?

Answer 1

Puts data and information in a computer.

Question 2

State 4 examples of input devices.

Answer 2

1. Keyboard
2. Webcam
3. magnetic stripe reader
4. barcode reader

Question 3

What does a keyboard do?

Answer 3

Enters text into a computer

Question 4

What does a webcam do?

Answer 4

Takes photos and records videos

Question 5

What does a magnetic stripe reader do?

Answer 5

Reads data from magnetic stripes on cards like debit and credit cards

Question 6

What does a barcode do?

Answer 6

Reads info from barcodes

Question 7

What are the 4 types of barcode readers?

Answer 7

1. Pen-type readers
2. Laser scanners
3. CCD readers
4. Camera-based readers

Question 8

Where are pen-type readers used?

Answer 8

Laptops or very low volume scanning applications

Question 9

State advantages of a pen-type reader (4).

Answer 9

1. Durable
2. Simple design
3. Small size
4. Low weight

Question 10

State a disadvantage of a pen-type reader (1).

Answer 10

Must come into direct contact with a barcode to read it

Question 11

Where are laser scanners mainly used?

Answer 11

Supermarkets

Question 12

State 2 advantages of laser scanners.

Answer 12

1. Reliable
2. Economical for low-volume applications

Question 13

Where are camera-based readers used? (4)

Answer 13

1. Age verification
2. Coupons
3. Event tickets
4. QR codes

Question 14

State advantages of camera-based readers. (2)

Answer 14

1. They can read barcodes on any surface
2. Can read code that is damaged or poorly printed

Question 15

State advantages of digital cameras. (2)

Answer 15

1. Produces higher quality images
2. Reliable as they’ve been around longer

Question 16

State a disadvantage of digital cameras. (1)

Answer 16

High power consumption