Cathode Ray Oscilloscope

What is the instrument called that is used to display the magnitudes of changing electric currents or potentials? What is displayed by the cathode-ray oscilloscope? Where the information of CRO is displayed? What is the abbreviation of Cathode-ray oscilloscope? CRO is the abbreviation of.................? How many main components a CRO contains? How many main components a Cathode-ray oscilloscope contains?

ISSB Test

ISSB Tests