This is Welded(Assembled), can use directly.
Oscilloscope was designed as a training oscilloscope.Circuit is simple , reliable , inexpensive.
With automatic, regular and one-shot mode , easy to capture the moment waveform.
Adjustable vertical displacement, and with instructions.This opens the possibility for users to add different features or develop new applications on the hardware.
This Oscilloscope MCU has been pre-programmed and no re-programming required.partially open-sourced.