How much time is spent scanning across each row of pixels during screen refresh on a raster system with resolution of 1280 X 1024 and a refresh rate of 60 frames per second?
Solution:
Here, resolution = 1280 X 1024
That means system contains 1024 scan lines and each scan line contains 128 pixels refresh rate = 60 frame/sec.
So, 1 frame takes = 1/60 sec. Since resolution = 1280 X 1024
1 frame buffer consist of 1024 scan lines
It means then 1024 scan lines takes 1/60 sec Therefore, 1 scan line takes ,
1 / 60 X 1024
Sec = 0.058 sec
