Frame Buffer – Image Flickr – Refresh Rates
Frame Buffer or refresh buffer is the memory area where picture definition is stored for further operations.
Refresh rate is the number of times per second the screen is refreshed.
Refreshing the screen
Sweeping the electron beam the entire surface of the screen and then return to redraw it a number of times per second. This process is called refreshing the screen.
When screen refreshing happens, the electron beam take a time to redraw the image to become visible is the process known as image flickr.
Interlacing is a technique for stable image in which instead of refreshing the screen every time the electron beams seep alternate the line in each pass. So refresh rate becomes doubled.