Barcod -

: The white spaces between the bars reflect the light, while the black bars absorb it.

Most barcodes do not contain descriptive data themselves; instead, they serve as a that a computer uses to retrieve detailed records from a database. Common Types of Barcodes barcod

While the technology was patented in the early 50s, it took over two decades to become a commercial success. The first major industrial application was by the in the late 1960s to track rolling stock, and the first retail use—the now-ubiquitous Universal Product Code (UPC) —debuted in 1974. How Barcodes Work : The white spaces between the bars reflect

The barcode was invented by and patented in the United States in 1952. The concept was inspired by Morse code, extending the dots and dashes into thick and thin vertical bars that a machine could read. The first major industrial application was by the

: A photoelectric cell detects these reflections and converts them into digital signals that a computer can understand.

At its core, a barcode is a machine-readable representation of data. A barcode scanner works through a simple optical process: : A laser or LED light shines onto the code.

The barcode is arguably one of the most transformative inventions of the 20th century. What began as a simple idea based on Morse code has evolved into a global standard for data identification that powers everything from grocery checkout lines to advanced genetic research.