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A graphical user interface (GUI) is one of the ways to interface between your microcontroller and a personal computer (PC) operated by a human with a mouse or a keyboard. It is always easy and require less skills to operate a device from a visual representations of the workspace (GUI) by simply clicking a mouse or using a keyboard rather than a command line. GUI can also be used to interface with other external devices located in different places. There are a lot of kinds software which can be use to design a GUI platform, the choice will usually depend on personnel preferences, software capabilities and the operating systems (Windows, Linux, Mac...). Among the popular ones we have Microsoft Visual Basic, Microsoft C#, Labview, Matlab etc.
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