Monitors have evolved from CRT to LCD technologies. CRT remains popular due to vivid colors and lower cost, though LCD is becoming more common. Monitor specifications include size, resolution measured in pixels, refresh rate, and dot pitch affecting image quality. Resolution and dot pitch impact sharpness, with higher resolution and smaller dot pitch providing clearer images. Standards like VGA and SVGA increased capabilities over time, with SVGA providing higher resolutions and more colors than VGA.