Video osciloskop:
https://www.youtube.com/watch?v=MmU9kRMDURw&feature=related
https://www.youtube.com/watch?v=qIfo_-d82Co&feature=channel
https://www.youtube.com/watch?v=hUIgAu3QQWQ&feature=channel
https://www.youtube.com/watch?v=g_KuGEh0PyA&feature=channel
https://www.youtube.com/watch?v=zQDuZ3a6HAE&feature=related