Refresh Type Cathode Ray Tube Vs Storage Type Cathode Ray Tube

Refresh Type Cathode Ray Tube	Storage Type Cathode Ray Tube
It uses refresh buffer or frame buffer to store picture definition.	It does not use refresh buffer as picture definition is stored inside CRT on a grid called storage mesh.
Picture definition is stored in form of intensity values for various screen points.	Picture definition is stored in form of positive charge distribution on storage mesh.
Concept of refreshing is used to maintain picture display on screen.	No refreshing is required.
It can produce wide range of colors as various intensity values are possible.	It does not display colors and displays single level of intensity value.
Colored refresh CRT uses three electron guns – red, green and blue.	It uses two electron guns – primary and flood gun.
If persistence of phosphor and refresh rate of CRT do not match, users perceive flicker.	It is free from the problem of flickering as very high persistence phosphors are used.
It is possible to modify particular portion of picture any time.	Particular portion of picture cannot be modified. For this entire picture must be erased and redrawn.
It is widely used to display realistic scenes, animations, graphics etc.	It is used for only line drawing applications.
It does not use collector mesh to control the flow of electrons rather control grid is used that controls the intensity value of each gun.	It uses collector to smooth out the flow of flood electrons.