Screen size: This flat-panel LCD television has a 40? screen, measured diagonally from corner to corner. This screen size is perfect for viewing from 4.9? to 9.5? away.
Resolution: A 1080p resolution means that this television has 1080 rows of pixels vertically. The more pixels a TV has, the clearer the images it can produce. The p stands for progressive scan, which means the TV refreshes every row of pixels during each cycle to produce smoother motion and sharper picture than interlaced scan.
NTSC tuner: A built-in NTSC tuner allows you to view standard analog television broadcasts through your television without a separate cable box.
ATSC tuner: The ATSC tuner means that you can enjoy over-the-air digital channels and theater quality audio (with a separate HD antenna) without the need for a digital antenna.
QAM tuner: The QAM tuner gives this TV the capability to receive free in-the-clear digital programming.
Aspect ratio: A width to height pixel ratio of 16:9 means this TV has a widescreen aspect ratio, which accurately recreates the dimensions in which HD programming and many feature films are shot.
Contrast ratio: Contrast ratio describes the difference between the darkest blacks and brightest whites a television is capable of producing. Since there is no industry standard for how contrast ratio is measured, it is only significant within a brand, not between brands. This television has a contrast ratio of 10,000:1.
Inputs: Using the 3 available HDMI inputs, you can experience high definition audio and video up to 1080p, the highest possible resolution available. The 2 component video inputs can be used for video resolution up to 1080i. Also available are 2 S-video inputs, 2 composite video inputs, 1 PC input, and 1 RF input.
SRS TruSurround XT audio: SRS TruSurround XT creates a 3D wall of sound that moves past the physical width of the TV so the listener no longer needs to sit directly in the middle of the couch to hear best audio effect. TruSurround XT also lifts dialogue out of the chaos of sound and provides deep bass.
Game Mode: Gaming places high demands on the TV. As a result, a TV should be "tuned" for games. Samsung learned the best practices from a leading console manufacturer and built them into Game Mode.