Well, darling, a television is a device used for entertainment that displays images and sound, while a cathode ray oscilloscope is a fancy tool used for measuring and displaying voltage waveforms. So, in simpler terms, one is for binge-watching your favorite shows, and the other is for nerds who like to play with electricity. Hope that clears things up for you, honey!
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Audio Frequency Oscilloscope and Cathode Ray Oscilloscope
CRO means cathode ray oscilloscope. The Cathode Ray tube is the display mechanism only. A CRO can be a digital or analog scope, with or without digital storage. A digital storage scope can use a CRO as the display mechanism, or it can use a LCD screen, or any other method. There was a type of Cathode Ray tube that used analog means to store the information on the screen, The storage takes place on the screen itself. They were pretty rare, and not seen at all today, as they didn't work very well. Perhaps that is what you are referring to?
It is the deflection on the screen (meter) per volt of deflection
change your resistance, its a little button, or if you are using an older oscilloscope, its a knob that will lower the sensitivity of the display. if it is something way higher than the oscilloscope can measure, you may have to run a resistor or transformer in the line.
An oscilloscope with 2 vertical inputs that are multiplexed to the CRT, either by chopping them together on every sweep or alternating between them on every other sweep. Some oscilloscopes also support a differential mode where the 2 inputs are subtracted to produce a single combined signal.