Example: "0" • code value 16 • pattern 123122
Pattern 123122 means: Bar×1, Space×2, Bar×3, Space×1, Bar×2, Space×2.
Bars are black rectangles; spaces are the white gaps. Each number is a multiple of the narrowest “module”.
Click any card below to load it into the example. Cards show the character/pair, code value, and the bar/space pattern digits (single-symbol, no Start/Stop).