codes

Alpha Numeric

• Code 128
• Code 39
• Code 93
• Logmars

Numeric

• Code bar
• Code 11
• EAN 13
• EAN 8
• UPC A
• UPC E

Code 128

• Divided into 3 subset 
• Each character uses 3 bar & 3 spaces
• Bar uses even number of element

Code39

• Alpha-numeric variable code
• 43 character include 7 special characters
• each character is of 5 bar 4 spaces
• It has low density 
• It require more space to encode data

EAN

• 13 digit code
• Only numeric code
• Left group 2-7
• Right group 8-13
• use for retail point of sale
• Compaq version is EAN8