Um pouco de teoria sobre código de barras É difícil imaginar nossa vida sem códigos de barras, especialmente agora que os conhecemos a cada passo. Vamos ao cinema e nossos ingressos contêm esse “desenho de barras em preto e branco”, vamos ao supermercad...

CODE 39 é o código de barras desenvolvido pela Intermec Corporation em 1975. Até 43 caracteres, incluindo números, letras e alguns símbolos, podem ser incluídos no código de barras: 0123456789 ABCDEFG HIJKLMNOP QRSTUVWXYZ -. $ / +%. Como as letras pod...

The Delphi programming language, or Turbo Pascal, has become a starting point for many developers. Thanks to the simple and clear syntax and the ability to write in a procedural style, it turned out to be very easy to learn. Many would compare it with Visual Basic, but at the peak of its popularity ...

Applications built in Delphi are less common than, for example, those built in C #. These programming languages are from different times. However, even nowadays Delphi and VCL can complete some of the modern tasks. There are many free and commercial libraries that can modernize even old applications...

As for Delphi applications, we understand that we are talking about applications implemented in VCL (Visual Component Library) for the Windows operating system. The popularity of Delphi VCL slightly faded with the advent of the C and .Net platform but there are lots of Delphi developers all around t...

Lately many countries have been digitizing payment processes. In other words, they convert existing payments to digital format. The most common way to automate payments is to use QR codes that are easily read by smartphones. The ability to encode a sufficiently large amount of information, high dama...