Observation consists of receiving knowledge of the outside world through our senses, or recording information using scientific tools and instruments. Any data recorded during an experiment can be called an observation.bservation consists of receiving knowledge of the outside world through our senses, or recording information using scientific tools and instruments. Any data recorded during an experiment can be called an observation.
A barcode scanner is a device that is used to read the printed barcodes. A barcode consists of a series of parallel, adjacent bars and spaces that are decoded with the intensity of the light reflected by them. When the scanning is initialized, the scanner lens reads the entire code with the help of the light source and converts the code into 0s and 1s.
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