Chapter 4 - Input Devices (1.1) Flashcards
1
Q
What is an input device?
A
Puts data and information in a computer.
2
Q
State 4 examples of input devices and what they do.
A
- Keyboard (enters text into a computer)
- webcam (takes photos and records videos)
- magnetic stripe reader (reads data from magnetic stripes on cards like debit and credit cards)
- barcode reader (reads info from barcodes)
3
Q
What are the 4 types of barcode readers?
A
- Pen-type readers
- Laser scanners
- CCD readers
- Camera-based readers
4
Q
Where are pen-type readers used?
A
Laptops or very low volume scanning applications
5
Q
State advantages and disadvantages of a pen-type reader.
A
Advantages - Durable, simple design, small size, low weight
Disadvantages - Must come into direct contact with a barcode to read it
6
Q
Where are laser scanners mainly used?
A
Supermarkets
7
Q
State 2 advantages of laser scanners.
A
- Reliable
- Economical for low-volume applications
8
Q
Where are camera-based readers used? (4)
A
- Age verification
- Coupons
- Event tickets
- QR codes
9
Q
State the advantages and disadvantages of digital cameras.
A
Advantages - produces higher quality images, reliable
Disadvantages - high power consumption
