Merits and demerits of DVST

Question

Specify the merits and demerits of the DVST?

Answer 1

Merits and demerits of the direct view storage tubes [DVST] can be displayed as follows:

a) Refreshing of screen is not needed.
b) It has a flat screen.
c) Selective or part erasing of screen is not possible.
d) It has the poor contrast.
e) Inferior Performance to the refresh CRT.