The low-cost instrument with LabVIEW And DB25

The paper presents the development of a low-cost virtual instrument with LabVIEW. LabVIEW is powerful development software for signal acquisition, measurement analysis, and data presentation, the flexibility of a programming language with expensive hardware. Because of high-cost, poor engineering students can´t learn useful of communication between software and hardware. To help them, the low-cost instrument with LabVIEW occurs. DB25 is a familiar interface because it is the standard for printers and modems. Many instruments have DB25 interface for connection to computers. Many computers have a DB25 interface port. Both the computer and the instrument need to have the same interface between them. DB25 is generally the least-expensive interface since no additional hardware is needed in the computer. The techniques of basic instrument showed in this paper can be used to apply to be satiable application in engineering projects. Moreover, these specially techniques make instruments as simplify clarify and economize