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CRT

The Cathode Ray Tube is the technology used in traditional computer monitors and televisions. It is essentially an electronic vacuum that uses a focused beam of electrons to excite phosphors on the inside of the screen surface. There are two main types of CRT technologies - shadowmask and aperture grille. LCD has become more popular due to compact design, no electromagnetic and ionizing radiation, lower power consumption and no screen flicker.

Component Video (YpbPr)

Superior to S-video and composite video, three connectors (red, green & blue RCA jacks) that transmit component video signals.

Composite Video

An analog video signal in which all colour information and sometimes audio signals, are transmitted together. This is the type of signal used by TV's in the United States.

The Composite Video Connector

Contrast Ratio

Contrast ratio is the basically the difference in light intensity between the brightest white and the darkest black. A high contrast ratio is desirable as it allows better colour reproduction without sacrificing dark black.