thanks once more kabeer02 but am stil not clear on how to download videos on you tube, i've just tried watch a clip but then my data is damn suffering so i tried looking for a link or and option that may direct me to download videos but i couldnt find any, only upload link i could see at the top right hand corner.
the way and manner to placed the oscilloscope isn't a problem but the greatest challenge is on how to adjust the settings, including how to connect the probes A, B, G and T in the circuit. I have tried connecting A and B in the output terminals and G connected to a separate ground (not a DGND but GROUND) and left probe T unconnected but some times it works fine - like when running a test on AC to see the ac waveform and half wave rectifier but when it comes to a such things as multivibrators circuits using 555timer and transistors, it never works; and so many others like that. infact, i've seen some other configurations and when i tried using it i noticed something that appeared as the IC pin was burning.
more clues pls kabeers
thanks