An oscilloscope makes the invisible world of electricity visible, letting you observe electrical signals on a video display ...

This device looks like a classic one-channel oscilloscope, complete with all the knobs and settings you’d expect. The DL 901, made by Data Laboratories Ltd., is a mystery even to [Thomas], who ...

This image is converted into an audio file by Rabiscoscopio, which can then be fed directly into his oscilloscope from his PC. That’s all there is to it – it really doesn’t get much easier.