CHAPTER SIX
BASIC COMPUTER OPERATIONS AND CONCEPTS- INPUT DEVICES
| 4.2.11.BAR CODE SCANNER | |
Bar scanner captures information on labels of products. The bar code consists of vertical bars whose width and distance apart determine a number. |
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| 4.2.12. MAGNETIC INK CHARACTER RECOGNITION(MICR) | |
Magnetic ink character recognition detects characters on specific documents such as cheque, certificates etc |
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| 4.2.13. OPTICAL MARK RECOGNITION (OMR) | |
OCR is a package that converts images with text and PDF files into plain text files. There are online and offline versions. |
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Figure 34: Picture of Optical Character Recognition |
| 4.2.14. POINT OF SALE (POS) | |
The point of sale input device captures information at the point of transactions, such as the super markets, petrol stations, ATM etc that use electronic gadget |
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Figure 35: Picture of Pont of sale |
EXERCISE
What is meant by input devices?
List and describe the various types of input devices
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