CBS是一个科学计算器工具，它首次以教育工具出现在法国二进制模拟转换测试中。当你选中“Step by step”选项，你将可以看见计算器是如何处理你的你的算术表达式的。“Calc-By-Step”程序可以在英语和法语两种模式中使用。“Calc-By-Step ”程序是Delphi语言建立的计算器程序，可以显示如何创建词汇剖析器和求值程序。在压缩包中包含Delphi 5的原代码，“Calc-By-Step” 是一个自由程序。-CBS is a scientific calculator tool, the first tool of education in France binary conversion testing. When you select the "Step by step" option, you will be able to see the calculator is how to deal with your your arithmetic expressions. "Calc-By-Step" to be made by the English and French were used in two modes. "Calc-By-Step" process is the establishment of the Delphi language calculator program that can show how to set up a glossary for analysis and evaluation procedures. The compression package contains five Delphi's original code, "Calc-By-Step" is a free program.