Hello, I'm from Poland, but currently living in the UK.
I present you my analog oscilloscope simulator. I am aware that there is a lot of similar stuff, but I hope to design something more complex. My program uses FFT and Butterworth filter so there is proper AC/DC coupling. Signal can be taken from text file - you can generate own one. As a guide i took Tektronix 465 and w2aew videos from Youtube.
Please, tell me what do you think about it. The project is in very early stage (I wrote it couple of days ago). Due to the design it works more like "single shot" mode. Long time ago I designed CRT simulator with persistence, focus, brightness etc. but it is slow...
Program in ZIP file as an attachment.