How much time is spent scanning across each row of pixels during screen refresh on a raster system with a resolution of 1280 by 1024 and a refresh rate of 60 frames per second?

The scan rate for each pixel row is

60 frames/sec × 1024 lines/frame = 61, 440 lines/sec

And the scan time is approximately 16.3 microseconds per scan line. (Scan time per

frame is 1/60 sec, or approximately 16.7 milliseconds.) by Rahul sagore