what is barcode
a barcode is an optical machine readable representation of data relating to the object to which it is attached originally barcodes systematically represented data by varying the widths and spacings of parallel lines and may be referred to as linear or one dimensional 1d barcode is an optical machine readable representation of data relating to the object to which it is attached originally barcodes systematically represented data by varying the widths and spacings of parallel lines and may be referred to as linear or one dimensional 1d