The user often notices when purchasing any commodity that there are many long lines in the back of the product box, as it is a specific code that allows when reading it through certain tools to display a lot of data and information about a specific product.

 
- Barcode

It is a light representation of computer-readable data such as numbers and letters, which is a two-dimensional code, and originally, it represented data in the display areas (lines) and voids between parallel lines, and we can call them symbols of one-dimensional bar codes, and it is placed on products Commercial, pharmaceutical, and commodities.


- How was the barcode invented?

The beginning was in 1932 AD at Harvard University in America, when the student, "Wallace Flint" did research about "automated grocery", but his idea did not see the light due to the economic crisis that was suffering from America at that time, then this research was developed in the year 1949 AD from Both inventors accepted "Norma Joseph Worland" and "Bernard Silver", where they devised an automated method for storing and displaying some information about specific goods and products. It was a collection of different sized overlapping circuits, but their invention was a failure due to its high cost.

In 1973, George Laurer developed this circular code to the longitudinal shape now known and was used in Ohio stores in the US for the first time.


- How does a barcode work?

It is read by a special device called Barcode Reader, where this barcode reader emits a light beam on the code so that the black columns absorb the light, and the white columns reflect the incoming light to the barcode reader, which in turn analyzes the reflected light, decodes the code, and sends data to the connected computer Its to display.