
Digital Systems
How QR Codes Work: Squares, Data, and Error Correction
A QR code stores bits in a two-dimensional grid of dark and light modules.
Digital systems often look magical because their visible surface hides several layers of standards and software. The cure is not more jargon; it is following the data one step at a time. We use current specifications and original technical sources, then separate what the symbol guarantees from what the surrounding service merely hopes you assume.

A QR code stores bits in a two-dimensional grid of dark and light modules.