CC-A

The CC-A character set includes the upper and lower case letters, the digits 0-9, the special function character, FNC1, a special separator character "|" between the primary and secondary data, and the following punctuation marks: ! " % & ' ( ) * + , - . / : ; < = > ? _ <space character>.

Each CC-A symbol can encode up to 56 digits, and contains between 3 and 12 rows, and from 2 to 4 columns. (Four columns are mandatory when the one-dimensional component is GS1-128 (UCC/EAN-128).) Only certain combinations of rows and columns are allowed as specified in this table:

Number of Columns	Allowed Number of Rows
2	5, 6, 7, 8, 9, 10, 12
3	4, 5, 6, 7, 8
4	3, 4, 5, 6, 7

Each row of a 2 or 4 column CC-A symbol begins with a quiet zone and a Left Row Address Pattern. Each ends with a Right Row Address Pattern, a one-module wide stop bar, and a quiet zone. (The Left Row Address Pattern is omitted from a 3 column CC-A symbol.) What comes in between depends on the number of columns. There will be from 1 to 4 codewords, and from 0 to 1 Center Row Address Patterns. Refer to the CC-A specification for details.

Each codeword consists of 4 bars and 4 spaces made up of 17 rectangular modules in one row. Row height is variable and adjustable. Error correction level is fixed at certain levels depending on the number of rows and columns.

CC-A's dimensions are dependent on the amount of data entered into a symbol. The height of any CC-A symbol can be from 3 to 12 rows. It will always be the minimum possible while still keeping the width no wider than the one-dimensional component. The row height can range from 2X to 10X where "X" is the current X-dimension (which must be the same as the X-dimension of the one-dimensional component). The width of a symbol can be from 40X to 101X. A minimum quiet zone of 1X is required on the left and right.