Jitendra Kumar(instructure of CS) jayjayshiva@Yahoo.co.in
CRT beam move from top left corner to button right corner of the screen for maintaining screen picture. it is called a cycle or frame. the number of frame in a second maintain by the beam is known as refresh rate. in raster scan system it is 60 to 80 frames per second
monitors can only handle a certain refresh rate. the monitors cababilities will be in the handbook.
Its not the drivers that ensure the refresh rate: they simply allow you to change the refresh rate which is dependant on the supported Hz of the monitor, you will find that most current PC monitors support between 50-80Hz but with the advent of 3D gaming/TV etc.... which requires 120Hz, this is quickly changing
TV screens amd monitors.
A High refresh rate (Applicable to mostly CRT monitors as they actually draw your pc screen per X frames per second (refresh rate Hertz)
By shaky I assume you mean the monitor is flickering, you can fix this by raising the refresh rate on your monitor. Ideally the native resolution and refresh rate work best, most often this is the highest refresh rate supported by your monitor, and the largest resoltuion supported by your monitor. Try changing refresh rate to 60 Hertz first, if it continues flickering, then keep raising the refresh rate until the flickering stops. (Don't forget to click apply after changfing the refresh rate to ensure the refresh rate is changed)
Yes, and the higher amount of megahertz the less flickering until about 85 megahertz which there is no flickering.
Refresh Rate
Hertz symbolized as Hz, describes the refresh rate of TVs.
Samsung LED TV's typically have a refresh rate of 120 hertz. The refresh rate is considered a important factor of quality in high end electronic televisions.
75 Hz
The Sony Trinitron KV-29FX11A TV has a resolution of 720 x 576 pixels, which is standard for a PAL format television. Its refresh rate is typically 50 Hz, as it operates in the PAL system. This model is designed for analog broadcasting and is not equipped for modern high-definition resolutions or refresh rates.
The brightness and contrast have some impact on eyestrain, but the main cause of eyestrain from computer monitors is the refresh rate. You should turn the refresh rate up as high as your monitor supports, especially if you are in an area with fluorescent lights. The default refresh rate for a monitor is 60 Hz, the same as fluorescent lights. With your monitor flickering at 60 Hz, and the lights flickering at 60 Hz (and not at the same time) the back-and-forth flickering, even though it can't be noticed, can cause considerable eye strain.