Code 3 of 9, also known as Code 39, is a versatile and widely used alphanumeric barcode that can encode a combination of 43 characters, including uppercase letters (A-Z), digits (0-9), and a few special symbols such as space, period, minus, plus, dollar sign, slash, and percent. Each character in the Code 39 barcode is represented by nine elements: five bars and four spaces, where three out of these nine elements are wide, hence the name “3 of 9.”

Code 39 is particularly favored in various industries for its simplicity and reliability. It does not require a check digit, making it straightforward to implement and scan, which enhances its appeal for applications in inventory management, manufacturing, and healthcare. The barcode’s design allows for easy printing with minimal risk of error during scanning, which is crucial in fast-paced environments.

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