people 5

In order to build my device I have had to look into how supermarket check stocks. Originally I believed this was only lists of products that was kept on lists but apparently three was more to it then I thought . Barcodes are the most common way of checking stock yet I knew not what barcodes did. After some research on Wikipedia I found that barcodes is a optical machine which is a readable representation of data which is data in lines. The history of barcodes began when student Bernard silver of Drexel institute of technology, Philadelphia worked on a variety of systems from optical soundtracks to Morse code. His patent idea led to the “classifying apparatus and method”. it was from this concept that led to the universal product code which in 1966 was to be used as automated checkout systems. Using the bar codes and a standardised 11-didgit checkout code they made a system to print and read the code. This was developed by IBM and many others. The IBM UPC became standard in supermarkets and it stayed legible even in moist and damp conditions. The most used scanner was a fixed light and single photosencer which comes in three types used today. These are the RS-232 barcode scanner, the second is PS/2 or AT. And the third is the USB scanner. Now that I know about the industry I went to look at other forms of data transference.