1

2

3

4

5

6

7

8

Scanning device

Flatbed scanners: like the copy machine.

Portable scanners: hand held device that

slides across the image.

Magnetic card readers: encoded information

is sorted on

RFID: more convenient because they don’t

require the card actually make contact the

reader.

9

10

Character and mark recognition devices

MICR: read those unused number on bottom

of check.

OCR: special printed character that can be

read by a light source changed into machine

readable code.

OMR: used to standardized multiple choice

test.

11

12

13

14

15

16

Monitors

Resolution: image are formed on monitor by

a series of dots or pixels (picture element).

Dot pitch: is distance between each pixel.

Refresh rate: how often a displayed image is

updated or refreshed.

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18

19

20

21

22

23

24

25

End