Input Devices (Unit one)

Question 0

What does a scanner do?

Answer 0

Scanners can be used to input an image in the format of a JPEG. The most. Common scanner is a flatbed scanner.

Question 1

Name all the input devices

Answer 1

Scanners
Digital cameras
Touch pads
Graphics tablets
Special keyboards
Touch screens
Optical character recognition (OCR)
Optical mark recognition (OMR)
Magnetic ink recognition (MICR)
Barcode readers (wands and scanners)
Magnetic stripe card
Radio frequency identification (RFID)
Touch tone telephones
Speech recognition

Question 2

What is OCR?

Answer 2

Optical character recognition.
Method of capturing data where devices recognise characters by light sensing methods. OCR is now commonly used in flatbed scanners.

Question 3

What is OMR?

Answer 3

Optical mark recognition
Is a form of mark sensing
Used for multiple choice exam papers
Fast data entry

Question 4

What is MICR?

Answer 4

Magnetic ink character recognition
Fast and reliable way of entering data
Documents are pre printed with character data in special ink that can be magnetised

Question 5

What are bar code readers?

Answer 5

Used to identify items in a store

The black and white stripes represent a code

Question 6

What are magnetic stripe cards?

Answer 6

A strip of magnetic material on a back of a card such as a debit or credit card that is usually made of plastic. Encoded with information on the black stripe so it can be automatically read on a computer when swiped I a reader

Question 7

What is RFID?

Answer 7

Radio frequency identification
Involves tags which emit radio signals. Different tags emit different signals that a can be recognised by different readers.
Used in new passports and in ouster cards to pay for travel
Animal identification