I would like to present a tool to help you present digital waveforms. This tool is WaveDrom. It is an online tool that generates the appearance of digital waveforms using a special language.
Each electronics specialist uses a universal meter. It is an available and very helpful tool in everyday work. Analog versions have practically been replaced by digital versions. Unfortunately, many people have a problem with the correct estimation of the measurement error. Therefore, I will show on the example of my meter how to do it.