While data is sent,sometimes the elements of data like letters,numbers are changed with another group of signs according to a rule. As a result ,this group of sings are called code.When the word "code" is heard in a conversation,usually it is thought that the computer code.However in our world there ara lots of codes in different types .This includes DNA code,communication codes,electronic element codes etc...
QR Codes take its name by the first letters of "Quick Response".It is one of the type of barcode which can be read by the phone cameras .QR code is created by a Japan Company called Denso in 1994.The code has usually black patterns on white background.It was firstly developed for automotive industry.It has a widespread usage among Japan and Southern Korea.Also with cell phones its usage increased today.
Barcodes consist of lines that have different thickness and spaces.Stock code,personal code,serial number etc can be shown by barcodes.For doing this barcode readers are used.
Color Codes are formed by Hex(3 bytes hexadecimal number) or RGB(Red-Green-Blue) Codes.They are used for digital designing and programming.
Computer Codes are used for programming and giving instructions to the machine.Programming languages like java,C++,Visual C etc creates these type of codes.,Web codes which were created by Html,Php,JavaScript etc are used for the internet .Hacking codes can be created by programs like Phyton,Perl...Sometimes special codes are written to the address bar of a browser with an amazing result....
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