Advantages of Direct View Storage Tubes (DVST):
1) DVST has a flat screen.
2) Screen refresh is not required.
3) High resolution complex images can be displayed without flickering.
Disadvantages of Direct View Storage Tubes (DVST):
1) Contrast is poor quality.
2) Performance is below average as compared to refresh CRT.
3) Partial erasing of screen is not possible.
4) Drawing and erasing is a slow process in DVST.
5) Does not display colors.