Many products now have a bar code attached to them. When a transaction takes place. the bar code is scanned and information is recorded. However, this method is not suitable for all data collection, for example the bar code method is unsuitable for automated examination entry.
Briefly describe the key features of a product, event or transaction that make it suitable for bar coding.
a) Bar codes:
This refers to alternating lines and spaces that are printed on an item. The alternating lines and spaces represent data in binary.
1. The product must be packaged so as to provide a place to stick the bar code.
2. Size- the product must be large enough to stick the sticker.
3. Durability- bar codes are suitable for long lasting products and not for perishables like vegetables.